I used to go to a lot of swinging parties which I have to say were some of the best times of my life. Or goes on huge beds with 5 or 6 girls/couples, watching the girls all kiss together while they are covered in cum, girls being tied to special bdsm chairs, blindfolded and letting anyone fuck them, waters ports, then with wg's, cumming in a shot glass for her to drink , or in her shoe and watching her walk around outside afterwards, or stuffing her panties inside her, making her cum then stuffing them in her mouth for her to such her juices out of while I fuck her ass.
Bananas, coke bottles, dildos on the end of adapted power tools, electro shock devices at these swinging parties also spring to mind.
In work I fucked one of the accountants in the office toilets, sounded in the middle of her panties then squashed them up against her pussy and she gave me regular text updates during the day about how sticky and wet she felt.
yeah... quite a lot springs to mind lol