These are backgrounds used on a site called Neopets.
The users can purchase backgrounds amongst other things to customize their 'pets'.
There's more than these, but felt like they might be some of the more interesting ones to share.
Please keep in mind everything I post from work is copy-write Neopets, NVWG, and Viacom.
I'll post more soon! A lot of cool things going on, excited to catch up here.