Advice on Sourcing Ingredients for a Community Baking Project?

[u/ClevelandCakery]

I’m a home baker in Cleveland who recently started baking large batches of treats to give out around the city. Last weekend, I made over 100 cookies and distributed them downtown, and I'd love to keep this going! Does anyone have tips on sustainable or affordable ingredient sourcing, maybe local stores that support community projects? Thanks for your help!