First, setting the boys up, each with his own rig is the way to go. As for a rotating vise under $100, I don't know. Maybe someone on here has an old one or 2 in good shape. For the tools, the best place IMO is Crazy Angler Tackle. A pair of scissors, a bobbin, a whip finisher & a head cement applicator bottle, $15. Add a AA Vise & you're looking at $32 per setup.