After spending way too much time on Tumblr, here are some more that were not in this thread either (there is a probably more, but it's such a pain to find anything with the mature content filter)
And some already posted but in much better quality
(If you found Tumblr image's URL ending with _400.jpg or _500.jpg, replace it with _1280.jpg to get the full res, doesn't work with gif/gifv sadly)