Here is a much better idea. Hidden agenda stuff. Buy your little dear a beautiful 1950s folder. I would go for a Voigtlander Perkeo I or !!, but any quality folder will do. One you will want to use and be happy with. Also some film.
A few weeks or months later, when said little prince or princess has tired of this latest enthusiasm, quietly retrieve the camera and unused film and claim it as your own. Voila! A new toy for you.
You will do well to watch the camera, however, to ensure it doesn't end up flogged for quick drug money at the nearest Cash Converter shop. Funny, sure, but it happened to a mate of mine, and after having retrieved the CC docket he had to pay out $130 to bail out the camera. (Druggy son moved out of the family home quickly after this event.)