[221Sarahborg]

Based off of experience I would definitely say get any common goods and consumables as we call them. Anything simple and small that runs out can put building to a hault, and the first week is good to go out shopping when you're not meeting. Things like variously sized zip-ties, various types of tape (duct, masking, packing, electrical, etc.), fuses, glues, sand paper, and anything that may be necessary outside of essentials like aluminum, wires, tools you may need.
We also build our chassis and all around robots from PVC so we make sure we get our fittings and pipes in ahead of time.