If you’re looking for Hook and Loop Fastener, try Feiner Supply (https://www.feinersupply.com/).
There is a lot of this used in this year’s game and you’re probably going to use it season after season. Feiner does sell in bulk to keep the prices down. In addition to all of the 2" hook and loop used on the Field Elements and Game Pieces, we use 1" on our reversible bumpers.
If you don’t think you can use a whole roll, talk with other teams in your area about making a joint order and sharing the costs.
I recommend ordering now because they don’t has the same response time as other FIRST Vendors.
Mentor, FRC 4418