Hmm. The LED lego idea has been posted, and now it's baked. But, I'm a fan of digressions, can we not spin off this idea a bit more? This is an idea for an LED lego based puzzle. A preset shape is chosen, but you don't know what it is. As you piece blocks together, they change their overall color based on how close you are to the Goal shape (red means you are warmer, for example). Goal shapes could be as simple as a cube, advancing into all sorts of geodesics and eventually entire star wars spaceships and what not.-- daseva, Jul 27 2008 Baked LED Legos http://www.kilian-n...ke-building-blocks/ [daseva, Jul 28 2008] Halfbaked LED legos LED_20lego [daseva, Jul 28 2008] and an Led Lego Rubix cube.-- 2 fries shy of a happy meal, Jul 27 2008 That could be fun. The colors would switch every turn. Predictably, so the puzzle would be solvable, but it would be harder, no doubt.-- daseva, Jul 27 2008 No doubt, ah but smashing it on the floor and then putting the pieces back together would no longer be a solution option.-- 2 fries shy of a happy meal, Jul 28 2008 Maybe start with a base and everything builds off that; the base changes colors and can provide hints?-- Bcrosby, Jul 28 2008 random, halfbakery