My two girls have masses of mobiles. Fabric birds with bells on, a very nice horse, a Mexican toucan, various fish....and we've never put them up. Because I have no *ing idea - and nor has their father - on how you hang them from the ceiling. Do you get special hooks? Or do you use cup hooks? Or, er, what?
I told you this was a pathetic question, and no doubt you will all say DURRR and point out the obvious solution but please, please do point it.