At a 2 day event at my field I traded a kid my Proto Pro Axis for his tarp so I didn't have to sleep on the cold wet ground.
Traded my friend my Vlocity for his bag of jolly ranchers.
Traded a broken Dm4 and a crappy pump I built for a Pm7.
Traded a crappy Sheridan gun that I got for $90 and traded it for a Black Magic pump, then sold it for $190.
A kid offered me a bag of paint to let him shoot my T2, I laughed and told him to keep the paint and he could shoot my T2 for free.
Some guy at the field offered me a Luxe for my T2, I also turned that down.