This cube is made of 72 Post-it® notes (the super sticky variety), although none of the stickiness is actually used to keep the structure together. Here is the video of making it.
The cube has 6 sides, and opposite sides look identical. I built it out of sticky notes of 3 different colors, 24 notes each. The unit is the same in each case, so I start by making 72 of them. After that, there are variations in folding the units — some are left as-is, some are folded once, some twice.
The tough part of building it was sequencing the connections in a way that wouldn’t block me from reaching into the cube to connect something later. The plan of building it bottom-up, one layer at a time worked pretty well. And as usual, the toughest part was putting in the final piece without creasing or deforming anything by mistake.
What do you think? Here are some more pictures.