I like this idea, it means you’ll always be trying some new combination. It also means that some things that you might not use as much, get to be the star.
I would separate toys from slappy bitey things and give them their own category. But also have an activity category like watersports, shower sex, homemade porn, anything else that you enjoy as an activity.
Maybe a positions category too, you could use the PotW: The Massive One thread for choices amd include a rule that you have to at least try it. Obvs put down feasible choices.