Take a look at this three-dimensional 8 × 8 × 8 LED cactus, created by user chr on the Instructables website:
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Want to make yourself like that? Then just follow this * um *simple DIY tool , ² and soon you will stun your friends with your own 3D-LED-cube!
___________________ ¹ In the original source - “geektastic” (from the words “geek” - geek and “fantastic” - fantastic). ² The comments published a translation of this manual, which made sir06Will .