It was a simple idea, but it was a blast! Here's how I did it:
1) I found a package (with 5 identical sheets) of safari stickers. I took one sheet, and attached the stickers to paper plates.
4) The boys took their clipboards, and they went in search of the paper plates. When they found one, they took the matching sticker from their sheet of stickers and stuck it to their piece of paper. The goal was to find all the plates and move all the stickers onto their sheet of paper.
Fun, right? I think it would be fun to hide little plastic animals and have the kids search for them. I think we might try that next time.