Here's an older thread on the topic that I just happened to find:
I think Fast Eddy/Cookshack sells hooks for ribs. Bacon hooks can be used. I use John Willingham's harnesses which are great for butts and birds. He has a special one that's good for hotdogs. His eCommerce site has been down for about a year, but you may still be able to buy them from him if you call.
I've thought about commissioning some one to build some more, and if any one is interested in doing a group buy, let me know!