I know a lot of our kids are real lego fans. So wehn I came across these I thought y'all might like them. This one is for lego bricks. I don't know if you can build with them, but if you used colored water, Kool-aid, or fruit juice you could make some interesting colored ice bricks and try! These would be interesting (cool? pun intended, of course!) for a graduation, bachelor party for a geek, etc.... LOTS of people use them for molding chocolate and say it is super simple (it is, I used to do a lot of candy making as a teen. You just melt the chocolate over very low heat and pour into molds, let set and pop out.) It would also make cute jello jigglers. http://www.amazon.com/Lego-4277645-...=toys-and-games&ie=UTF8&qid=1310569679&sr=1-2 This is for the lego mini-figures: http://www.amazon.com/LEGO-Minifigu...=toys-and-games&ie=UTF8&qid=1310569679&sr=1-1 Be sure to read the comments to see how others have used these.