I made one for a great nephew; since I never seem to throw anything away, I added some kiddo things but some practical things and 2 to 3 year old would learn the names of; a key, paperclip, small eraser (some are animal shaped), a button, small cork, all sorts of little things. You'd be surprised at what you will think of once you start looking around. I also made a 'list' of the items in the bag, so the adult can say, can you find the - whatever. So they know what is in it.