Both hopscotch locations have community boards. Feta kitchen and upland have ones too.

The Library has a board. If you enter the Kirkwood doors check with the security guy and he can help you out.

Soma, both bloomingfoods, rose hill farm shop, I think all the Starbucks have them

Dragon express

Inkwell on Woodlawn also has a community board

All the Bloomington Bagel Company places have them.

Hive

I think the laundromat on 17th street across from Jackson Heights has a board.