This what is known as a net, eight cubes, that when folded in four-dimensional space, will form a hypercube. There are actually 216 different combinations that will form a hypercube. I chose one that had no overhangs, so can be printed without support.
If you find yourself in hyperspace, this link will lead you to a color-coded graphic, to let you know just how to fold the 3D printed object:
http://www.matematita.it/personali/index.php?blog=7&cat=196
There are several 3D printable "models" of hypercubes or tesseracts around, but they are only projections, a bit unsatisfying to me. This model could really be "folded" into a hypercube. It is "4D READY".

As shown, printed in ABS without support.