Pocketful of Therapy: A great catalog of theraputic tools, ranging from seat pads, pencils, grips, Handwriting wtihut tears items, fine motor strengthening devices, toys/tools for speech therapy, etc. This is where many speech, OT and PT providers go for their tools.
Handwriting without Tears: One of the best handwriting programs out there. Used at schools for children with Learning Disabilities and public schools alike. Workbooks and supplies are very reasonable, and I use the workbooks at home with my kids for practice. Well worth it, and they have been speedy with shipping through their online store.