I wanted to point out Game Developer Studio.com, which is (as far as I can tell) the work of one amazingly prolific and talented artist. He has hundreds of asset packs for sale at reasonable prices (some of them free). The tile sets would work great with Mini Micro's TileDisplay, and the other assets would work fine as sprites or drawn directly to a PixelDisplay.
The above is just a screenshot from page 1 of his catalog.
I have no connection with this guy (except as a customer — some of his icons are in Annelids). But if you can't or don't want to make professional-looking artwork yourself, and can't find what you need on OpenGameArt or similar, it's great to know work like this is available.
