I know of only one, and that is Bebedoll. Bebedoll will do almost any thing.  She refers to fisting as "puppetry", (as in you've got a puppet on your hand). Contact her about it.  She is a Chicago LEGEND and has 100+ reviews. She charges extra for puppetry sessions. You'll want to take vitamins, Wheaties, and probably a Viagra because she will rock your world. She also has dozens upon dozens of toys in all shapes and sizes.