I have also made clear plastic containers, a bit bigger and used sand instead of sprinkles in our containers. I had the boys collect small things from around the toy box and other things to put into the sand. The boys had a great time hiding plastic dinosaurs, small erasers, broken crayons, etc. But there is also a commerical game that can be bought for gifts or just for fun. Each game is themed and we have had a great time with ours. To find out more about the commerical "Find IT' games go here,
These are great for in the car, to just have sitting around the house, for when you go camping or other places that you might need to kill a little time, but don't want to take up a lot of space. They are fun for both kids and adults. So check them out and have fun!