I collect blinkies, buttons, and stamps!
Blinkies I organize by topic, stamps also by topic, and buttons I separate. General buttons are also organized by topic, but buttons for people’s websites are in a different section organized by color :3 maybe one day I’ll make a more curated button list for sites and why I like them ^^
Blinkies tend to be things I like or things that are funny to me. Buttons are similar, including Internet opinions and uses (ex. Privacy and piracy). Site buttons are generally ppl I’ve followed on neocities plus a few others. Stamps tend to be more generally political bc I started collecting them on deviantart as a teen 
a few are aesthetic or silly.
I’d like to start collecting pixel art but haven’t yet. I’d probably organize those by subject and size. Flowers would definitely be a subject id collect >:3