The first thing you'll run across when needing supplies is getting boxes, padding, and such stuff for shipping!
Our favorite shipping & office supply shop is ULINE. They carry pretty much everything in the world for shipping and shipping is fast from any of their many warehouses around the US. They also have a great webshop catalog that is really easy to navigate.
In particular we like:
Once you get to ordering a lot of stuff, you can add some fun freebies that they offer. We take turns at the studio, choosing which (useful? fun? ridiculous?) item to get
We investigated whether Hall & Oates has a shadowy financial interest in ULINE. So far we have not found any evidence for or against! One thing is for sure, someone there is a huge fan