Lego Party. Party Favors: Small lego packages. Range from $5-$7. Invitations: The best way is to probably scan pictures from lego advertisements that come in the toy packages or on the internet. Then of course, put all needed info. Foods: I'd suggest a marble cake with one of those pictures that is part of the cake. Take a picture of your child with his lego creation. GAMES: Have a lego-building contest. Time the kiddos for about ten minutes, and see what they get. Also, blow up a big lego picture with lots of blue blocks and one red block. Try to stick a red block, blindfolded (the traditional pin-the-tail). Decorations: Buy big blocks and put them around the house. Don't forget color-coordinated balloons!