I did a dinosaur theme before - favourite activities were making "fossils" or "foot prints" using playdough and little dinosaur figures I got from the dollar store. I also did a dinosaur egg hunt by hiding those plastic Easter eggs around outside and having in them find them. Didn't really hide them - just scattered them around in plain sight, but they loved it. I had to hide them over and over again.

I am doing a a dentist/tooth brush theme right now. I got books from the library and today we made out own tooth brush pictures and glued yarn on them to make the brush bristles.

But the thing they have been playing with constantly for the last week has been the bins of bead necklaces and gold coins I brought out for St. Patrick's day.