I decided to combine one of the most popular toys LEGO with one of the most popular evergreen game Tetris. The result is LEGOTris - a game you can play on a LEGO board.
Print some of these and put them in a box. Take random one from the box and have fun. :)
Changed the size of the blocks a little to match the real size of the LEGO blocks. Added standard LEGO holes so LEGOTris can fit on a standard board.