I've got the idea from a old Sidebar gadgets but it only had a grid of 3x3 so I've recreated it and made some more...
Maybe I went way too far but if you have the performance for it, why not (15x15 and 25x25

The largest two grids had to be a little bigger in size, otherwise the blocks wouldn't fill up the whole space.
Sorry for the big GIF (~5mb), be patient, all sizes will be shown (5x5, 7x7, 9x9, 11x11, 15x15, 25x25) Will be available in my upcoming v3.5.0
Feedback welcome!
