After one trip where the kids handed me their lanyards every time they wanted to ride something, I put them away forever. I bought a waistbag pin holder to carry our trading pins in which was better.
I also tend to just keep a baggy in my purse and a couple of pins in my pants pockets for when they want to trade. We only trade with cast members, so that works fine. Much easier than taking the pins off something to trade them.
Sheila