Christmas is coming and with a baby on the way I wont be splashing out or getting splashed out on (unless my little 'bonus' comes through I'm waiting for

)
Anyway, I went into a random little shop in town the other day and that had loads of toy cameras. I've never come across them before and was intrigued. I like the idea of a plastic bit of cack snapping on 120 (6x6) film just for fun.
Has anyone had a go and is it worth it? I'd be looking at the cheaper models to be honest just for a bit of fun. There's some starting around £25 if I remember.
Also how do you go about processing the film?