I have a case I bought for iPhone 12 (also 12 Pro, I think the package said) that I used for about 10-12 days until my Otterbox case/holster came in. I paid just over $13 for it to protect my phone for a week or two until I got my new case. $7 shipped.
50871671336_f088f4cd7e_c by kentuckyyeti, on Flickr
50871772892_e90e9df319_c by kentuckyyeti, on Flickr
IMG_E0489 - Copy by kentuckyyeti, on Flickr
50871671336_f088f4cd7e_c by kentuckyyeti, on Flickr
50871772892_e90e9df319_c by kentuckyyeti, on Flickr
IMG_E0489 - Copy by kentuckyyeti, on Flickr