Step 1: What you need
An Espruino Board (http://www.espruino.com)
A switch, and two wires for it
A string of 12 WS2811 RGB LED Lights
(Not shown) Wrapping paper, tape, and double-sided tape
Step 2: Cutting the Tube
Also cut another ring from the middle of the can, around 3cm wide. Cut across it as well - this will help to hold the LED lights in place.
Step 3: Drilling holes
Put the two ends of the can back together, and tape them together on the inside.
Finally apply double-sided sticky tape around the outside of the can, and then use some patterned paper (like wrapping paper) to cover up the pringles text.