I wanted to make some unusual, personalised Christmas tree baubles. This laser cut design slots together without any additional fixings. There is enough room inside for some flashing LEDs or perhaps a small gift!
Made at the London Hack Space: http://london.hackspace.org.uk/
Personalise the faces of the cube with your own engraved or cut designs. Use 3mm perspex and cut with a laser cutter. I found that scaling to 98% of the original size made the components fit together nicely.