This is not directly related to PbtA (yet), but I have fallen in love with Jakub Rozalski’s art on the boardgame Scythe, currently on kickstarter.
I think it would make for a very inspiring backdrop for a PbtA hack.
I wish I had time to develop it myself, but I don’t, unfortunately.
So if you like desolated rural landscapes from an alternate history, do check it out.