I’ve found all kinds of things; LEGO people, matchbox cars, ceramic hearts, spades, diamonds that are probably hand made, patches, personalized wood geo-coins, plastic bugs, slap bracelets.
The last several have been micro caches but I put in little compasses, mini geocoins, those mini geocache green bricks, patches and pins to exchange. I’m not talented so I can’t do hand made items (I think I like those the best though). I haven’t run into any travel bugs, or released any yet since I’m still new. I like to take pictures of the swag in a cache, it’s fun to look back on. But living in the southern desert when it’s 117° in August I have to think about the swag surviving!
As for anything super weird- nothing yet- but I’ll keep you posted!