C.F.
Boy that stinks. Two options, as I see it. Number one- let him play with the toys and tell the dad and grandma that they should either buy him toys appropriate for his age (they need to look at the little label that just about every toy has stating a recommended age) so he can play with them, or if they don't, that you are going to let him play with them anyway, and if they break, they break, and they will have to deal with it. Number two- take take the toy away, and put it in the basement until he is old enough to play with it without breaking it. They won't like that he isn't getting to play with the toy they bought. Do this enough, and maybe they will start putting more thought into the appropriateness of the gifts they buy for him. I've already had to do this with my daughter's gifts. She got things appropriate for 2 years and up on her first birthday. I left the things that were okay for her to play with out, and the other things I just put in the basement until she is old enough. Sounds like you need to decide which avenue to take, and then have a heart to heart with them.