Made by Quirky member Chunder, Pixel has a silicone mold with a 9×9 grid of squares. Each of those squares can be depressed, which in theory would also lead to a waffle with the corresponding square-shaped indentations. The great thing about the mold is that you won’t be stuck with one pattern.
Quirky is currently taking surveys to improve the commercial version of Pixel. You might want to tell them that Voxel would be a better name for it.