I don't have anywhere near as to what I used to. At one point the anime folder was up to 20,000 pictures that I had from scouring Gelbooru. One hard drive failure later I'm down to about 8,000.
I mainly use Sankaku Complex to find stuff now. It's the easiest to navigate and the selection never really dries up.
https://i.imgur.com/zczuZaJ.jpg
https://i.imgur.com/FmDCYHV.jpg
https://i.imgur.com/i8WqUL9.jpg
I also highly recommend using Waifu2x. I've been upscaling the hell out of pics that I want to save, but were too small resolution for my tastes