Now my son is designing robots like crazy with his Lego parts. Here are his two latest. The first is the Four-legged Walker (the name is self-explanatory).
The second is the Security Sweeper. I like this one the best. The body is a barrel chair from the Krusty Krab Restaurant set. The top (a security camera with dish transmitter) is from one of the Mars Mission sets. Best of all the locomotion (at bottom) is the broom used to sweep up the Krusty Krab. Obviously another pair of ingenious designs.
My son has also taken to commenting on posts here. Look for some of his comments!