I don't write a note every time one of these guys makes a minor adjustment, but Ibotta added a number of products and bonus features yesterday. It's worth a look.
Ibotta has been the least useful of the app-based bonus programs for me, but that's more because of my shopping patterns than any fault in the app itself. We simply do much of our shopping at supermarkets that aren't supported. But a number of the products they offer bonuses for are household staples and could earn you some cash.