The Tenga eggs can be washed and thus are reusable. I like them better than the cylinders. The cylinders are allegedly reusable if you don't cum inside them, but I make enough precum to not find that to be an option. My favorite of the Tenga eggs is the silky.
WALDT. Some hobby for sex, but I'm lucky enough to get plenty of that with the SO. I primarily hobby for fetish and thankfully I have a relatively benign and safe one- handjobs and CFNM-femdom type scenarios.