Granted, you have to plan a barbecue at least a month in advance to make enough ice cubes to truly make enough ice blocks to give it a Tetris feeling (and who knows how much time to make the mold), it doesn't mean this Instructable is impossible to make for anyone who has a little time and patience. The step-by-step goes through the process of building a unique silicone Tetris mold that you can then put water in and freeze. Regular store-bought food dye gives the block its color, but I can't imagine what happens when it melts in your drink and gets all over your lips. You'd probably look like you've been sucking on Otter Pops all day. Kim Phu

How to make Tetris ice cubes! [Instructables]