Thank you Danielle and Robert! I'm not sure I'm ready to set up an acrylic bender, I think I'd be more comfortable starting out with gluing up acrylic, ordering it flat and gluing my own boxes. Somehow gluing sounds less difficult to me than a simple bend!
I'll reach out to some local suppliers - it's tough to find in Minneapolis. Canal plastics is honestly not bad, if I cut my own and sand my own corners it's more affordable than the local shops sometimes... if anyone has any other acrylic hook ups I'd love that :)