Riding bikes, although it is not a good place to bike - we have replaced 3 inner tubes so far - too many cactus prickys!
Putting rocks on the chain and spinning the peddles to watch the rocks fly off the other end :)
Doing puzzles - looks like Sammy is trying to help in this one!

That Cinderella one is 300 pieces! Thats the biggest they have ever done, and they did it all on their own.

Making things with clay. this one is a cup, blueberries, peas, corn, jelly beans and a bird sitting on a nest