Because Tumblr is Tumblr, there are still ways to access a lot of the "hidden" images if you already have the address; just replace "post" in the address with "image." On that note, here are some great NSFW Peter/Gamora fanart recs, mostly with a femdom bent. Save 'em while the saving's good! Who knows when it will occur to Tumblr to close this loophole.

Peter/Gamora cuddles (x) by write-like-an-american

Peter/Gamora explicit femdom (x) by whobahstank

Peter/Gamora breast worship (x) by whobahstank

rule 63 Peter/Gamora by whobahstank (link goes to their twitter)

Peter in bondage (x) by fenthelascivious. Unfortunately I can't figure out how to get at the second piece in this photo set, which had Gamora and Peter both, but this first piece is still VERY nice.

If you have any cosmic MCU fanart links in similar straits that you'd like to rec, feel free to link them in the comments here!