I made a Mini Bluetooth Speaker. The case is designed with Tinkercad .The case has different parts could be easily 3D printed & assembled . The speaker size can be upto 1.8" in diameter with 3 x 2 = 6 watt. This can be easily recharged with any Phone charger.

Supplies

Bluetooth Audio Module
Bluetooth Amplifier max 3+3=6 watt
TP4056 USB Charger Module
Speaker x 2
Led 5 mm
Switch
18650 Battery 1200 mAh

Step 1: 3D Printing Speaker Case

You need to 3D print the case. Print all the parts & assemble. Details instruction are given in video. You can download the 3D printable .stl file here: https://www.thingiverse.com/thing:4994728

Step 2: Soldering the Parts

As per the circuit diagram solder the components & assemble.First remove USB port which is not needed. Cones are marked T for top(first) & B for bottom(second). Check video for complete instruction.

Step 3: Assembling

Now Assemble the components from bottom to top. You can make the top cover with hot glue gun & Dice. I have made the dice for the top cover which you can 3D print. Check the video for complete instruction.