Ipad or camera for an 8y/o to make short films?

[jaws5]

Hi, my son, almost 8, loves making films and uses Lego Film maker on his sister's ipod, and Hue Animation on the PC. Both are stop motion animation kits. His sister uses imovie on her ipod to make short films, and this looks great, but they're always fighting over it. His birthday is coming up and I'm thinking Ipad Mini and use imovie. Anyone with experience here who could advise on any other cameras, etc. or is Ipad the best option? Thanks!