I made this project as a valentines gift. It shows time, and messages at a specified time and date. Also, an RGB button can be pressed to light up the acrylic. I've 3D printed the case using black and clear PLA filament.

Here's the materials I used:

Supplies

NodeMCU V3 ESP8266 ESP-12E
Digital Capacitive Touch Switch Module TTP223B
Grove – RGB LED Stick (10 – WS2813 Mini)
5V Relay Module SPDT
7 segment display 4 digit LED module TM1637

Step 1: Hardware

See the pictures for the schematic and the hardware I used. Here's the components:

NodeMCU WiFi Board
- Any ESP8266 board can be used. i used this since its what i have.
Digital Capacitive Touch Switch Module TTP223B
- To use a switch to turn on the lights
Grove – RGB LED Stick (10 – WS2813 Mini)
- Light up the acrylic
5V Relay Module SPDT
- To turn on the lights
7 segment display 4 digit LED module TM1637
- Show the time

Connection to NodeMCU

7 segment display 4 digit LED module TM1637 CLK → 12
7 segment display 4 digit LED module TM1637 D10 → 14
7 segment display 4 digit LED module TM1637 VIN → 5V
7 segment display 4 digit LED module TM1637 GND → GND

Grove – RGB LED Stick GND → GND
Grove – RGB LED Stick VIN → 5V
Grove – RGB LED Stick SIG → 4

5V Relay Module GND → GND
5V Relay Module VIN → 5V
5V Relay Module IN → 5
5V Relay Module Common → 5V
5V Relay Module Normally Close → Flower

Flower other wire → GND

Capacitive Touch Switch VIN → 5V
Capacitive Touch Switch GND → GND

Capacitive Touch Switch SIG → 13

Step 2: Arduino Code

Add the following libraries to your Arduino IDE:

Here's the code I used with commented explanation. Copy this to your arduino IDE, upload and light it up!

//Varaibles to change
/*Get offset from <a href="https://en.wikipedia.org/wiki/List_of_UTC_time_offsets"> https://en.wikipedia.org/wiki/List_of_UTC_time_of...</a>
   ex: For UTC -5.00 : -5 * 60 * 60 : -18000 */
const long utcOffset = 28800;
int specialDay=16;
int specialMonth = 2;
String monthlyMessage = "lets dance to foreber";
String yearlyMessage = "its been a happy year";

//Wifi Credentials
#ifndef STASSID
#define STASSID "PutYourWifiSSIDHere"
#define STAPSK  "PutYourWifiPassHere"
#endif


//Libraries to use the RGB LED Stick
#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
#include <avr/power.h> // Required for 16 MHz Adafruit Trinket
#endif
#define LED_PIN  4 //Pin the RGB LED Stick is connected
#define NUMPIXELS 10 //Numbers of NeoPixels are attached to the module
Adafruit_NeoPixel pixels(NUMPIXELS, LED_PIN, NEO_GRB + NEO_KHZ800);// Declare our NeoPixel strip object:


//Libraries to use the 7 Segment display
#include <TM1637Display.h>
const int CLK = 12; //Set the CLK pin connection to the display
const int DIO = 14; //Set the DIO pin connection to the display
TM1637Display display(CLK, DIO); //set up the 4-Digit Display.


//Pin connections
const int buttonPin = 13; //pin connected to the switch
const int ledPin =  5; //pin connected to the relay


//Other Varaibles
int numCounter = 0;
int buttonState = 0; // variable for reading the switch status
unsigned long previousMillis = 0;// will store last time LED was updated
unsigned long previousMillis1 = 0;
const long interval = 40000;
int pressed;
String curr_min;
String prev_min;

//Libraries to use the Wifi
#include <ESP8266WiFi.h>
#include <WiFiUdp.h>


const char* ssid = STASSID;
const char* password = STAPSK;

//Libraries to get time from the internet
#include <NTPClient.h>

//UTC Time
const long utcOffsetInSeconds = utcOffset;
char daysOfTheWeek[7][12] = {"Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"};
WiFiUDP ntpUDP; // Define NTP Client to get time
NTPClient timeClient(ntpUDP, "pool.ntp.org", utcOffsetInSeconds);

//To set Wifi Manager
#include <DNSServer.h>
#include <ESP8266WebServer.h>
#include <WiFiManager.h>

void setup()
{
  WiFiManager wifiManager;
  wifiManager.autoConnect("Love Watch");

  timeClient.begin();
  pinMode(ledPin, OUTPUT);
  pinMode(buttonPin, INPUT);
  display.setBrightness(0x0a); //set the diplay to maximum brightness

  pixels.begin();
  pixels.clear();
  digitalWrite(ledPin, HIGH);
  Serial.begin(9600);
  timeClient.update();
  String curr_min = String(timeClient.getMinutes());
  if ( curr_min.toInt() < 10) {
    curr_min = "0" + curr_min;

  }
  String curr_time = String(timeClient.getHours()) + curr_min;
  display.showNumberDecEx(curr_time.toInt(), 0b11100000, false, 4, 0);

}


//letters aside from k,m,q,v,w,x to print text on the 7 segment display
const uint8_t a = 0x77 ;
const uint8_t b = 0x7c ;
const uint8_t c = 0x39 ;
const uint8_t d = 0x5e ;
const uint8_t e = 0x79 ;
const uint8_t f = 0x71 ;
const uint8_t g = 0x6f ;
const uint8_t h = 0x76 ;
const uint8_t _i = 0x6 ;
const uint8_t j = 0xe ;
const uint8_t l = 0x38 ;
const uint8_t n = 0x37 ;
const uint8_t o = 0x5c ;
const uint8_t p = 0x73 ;
const uint8_t r = 0x50 ;
const uint8_t s = 0x6d ;
const uint8_t t = 0x31 ;
const uint8_t u = 0x3e ;
const uint8_t y = 0x6e ;
const uint8_t z = 0x5b ;
uint8_t _char = 0;
const uint8_t blank =  0x00;
void send_message(String message) {
  if (_char > message.length()) {
    _char = 0;
  }
  uint8_t  segment;
  uint8_t _display [3];
  for (int i = 0; i < 4; i++) {
    switch (message.charAt(_char + i)) {
      case 'a':
        _display[i] = a;
        break;
      case 'b':
        _display[i] = b;
        break;
      case 'c':
        _display[i] = c;
        break;
      case 'd':
        _display[i] = d;
        break;
      case 'e':
        _display[i] = e;
        break;
      case 'f':
        _display[i] = f;
        break;
      case 'g':
        _display[i] = g;
        break;
      case 'h':
        _display[i] = h;
        break;
      case 'i':
        _display[i] = _i;
        break;
      case 'j':
        _display[i] = j;
        break;
      case 'l':
        _display[i] = l;
        break;
      case 'n':
        _display[i] = n;
        break;
      case 'o':
        _display[i] = o;
        break;
      case 'p':
        _display[i] = p;
        break;
      case 'r':
        _display[i] = r;
        break;
      case 's':
        _display[i] = s;
        break;
      case 't':
        _display[i] = t;
        break;
      case 'u':
        _display[i] = u;
        break;
      case 'y':
        _display[i] = y;
        break;
      case 'z':
        _display[i] = z;
        break;
      default:
        _display[i] = blank;
        break;
    }
  }

  display.setSegments(_display);
  _char ++;
}




void loop()
{
  unsigned long currentMillis = millis();
  timeClient.update();
  curr_min = timeClient.getMinutes();
  if ( curr_min.toInt() < 10) {
    curr_min = "0" + curr_min;
  }
  String curr_time = String(timeClient.getHours()) + curr_min;
  unsigned long epochTime = timeClient.getEpochTime();
  struct tm *ptm = gmtime ((time_t *)&epochTime);
  int monthDay = ptm->tm_mday;
  int currentMonth = ptm->tm_mon + 1;

  if ( curr_min != prev_min) {
    prev_min = curr_min;
    Serial.println(curr_time);
    display.showNumberDecEx(curr_time.toInt(), 0b11100000, false, 4, 0);
  }

  if (currentMillis - previousMillis1 >= 500) {
    previousMillis1 = currentMillis;
    if (curr_time == "000") {
      if (monthDay == specialDay && currentMonth == specialMonth) {

        send_message(yearlyMessage);
      }
      else if (monthDay == specialDay) {
        send_message(monthlyMessage);
      }

    }

    if (curr_time == "2311") {
      for (int i = 0; i < NUMPIXELS; i++) {
        pixels.setPixelColor(i, pixels.Color(255, 0, 127));
        pixels.show();
      }
      send_message("good nyt "); //change this message using small letters letters aside from k,m,q,v,w,x
    }

    else if (curr_time == "630") {
      for (int i = 0; i < NUMPIXELS; i++) {
        pixels.setPixelColor(i, pixels.Color(0, 0, 0));
        pixels.show();
      }
      send_message("ganbate");//change this message using small letters letters aside from k,m,q,v,w,x
    }

    else if (curr_time == "930") {
      send_message("hi");//change this message using small letters letters aside from k,m,q,v,w,x
    }

    else if (curr_time == "1159") {
      send_message("lets eat "); //change this message using small letters letters aside from k,m,q,v,w,x
    }

    else if (curr_time == "1830") {
      send_message("lets eat"); //change this message using small letters letters aside from k,m,q,v,w,x
    }

    else if (curr_time == "959") {
      send_message("gud nyt ");//change this message using small letters letters aside from k,m,q,v,w,x
    }
  }
//checks if the switch is pressed for 1 second. If yes, turn on the RGB Lights to Purple
  buttonState = digitalRead(buttonPin);
  if (buttonState == HIGH) {
    pressed ++;
    Serial.println("touched");
  } else {
    pressed = 0;
  }
  if (pressed >= 10)
  {
    pressed = 0;
    if (digitalRead(ledPin)) {
      for (int i = 0; i < NUMPIXELS; i++) {
        pixels.setPixelColor(i, pixels.Color(255, 0, 127));//Change the color of the rgb lights here
        pixels.show();
      }

    }
    else if (!digitalRead(ledPin)) {

      for (int i = 0; i < NUMPIXELS; i++) {
        pixels.setPixelColor(i, pixels.Color(0, 0, 0));
        pixels.show();
      }
    }
    digitalWrite(ledPin, !digitalRead(ledPin));
    Serial.println("on");
  }



  delay(100);

}<br>

Introduction: Flower Box

Supplies

Step 1: Hardware

Step 2: Arduino Code