I have a Polaroid-branded Zink printer from around 2008 and a Polaroid-branded Zink printer from more recent years and the quality has always been rubbish. BUT, I still bought a Brother Zink-on-a-roll printer that I use to print out small pictures as stickers to stick into my journal as a photo diary.
Ultra-niche use, of course, but there you go, there's nothing as zero-config as this thing.