I was sad the day the "Supplies" category of product was retired, since there was plenty of stuff available which is hard to find, or just way more expensive, but I understand the need to focus and try to find a clear niche.
Speaking of Kickstarter, it seems possible for the two to co-operate: there's at least one product (Nick Johnson's "Re:Load Pro" active DC load) that I've backed on Kickstarter, and on the day the funding was complete I noticed it's also available (as a pre-order) on Tindie.
Kickstarter: https://www.kickstarter.com/projects/nickjohnson/re-load-pro..., and Tindie: https://www.tindie.com/products/arachnidlabs/reload-pro/.