I let my three year old boy (about to be four in a couple months) use my Canon 5DmkII (secured on a tripod, of course). He said he wanted to take pictures of me. I was very excited, so I jumped at the idea. Here is what he captured:
I reciprocated the offer by photographing him. He’s used to being in front of the camera, so he was very playful. I think he was pretending to be in a rocket ship here: