These mini's are great! some are nice and easy for printing but many of these models are hard to print without support and a few have solidity errors. This tool https://tools3d.azurewebsites.net/ can help fix these solidity errors. these are great models andI hope to see more of them!
Another tip is to slice models in half, so you can print 2 pieces and glue together. I might post a remix where I put them in parts for easier printing.