The library has several specialty cake pans available for checkout. You can find them here. You can borrow a cake pan for three weeks. Please wash it before you return it!
The library also has tip, coupler, and icing sets. You can find them here.
Baking with the Cake Boss by 
The Complete Photo Guide to Cake Decorating by 
The Contemporary Buttercream Bible by 
The Contemporary Cake Decorating Bible by 