Hard to part with or trade.
Some items will be easier to trade than others dependent on what is offered.
Mostly buyables, some retired.
Quantity = 9 = can offer retired caps:
2 Retired Altador Cup Mystery Capsule
1 Retired Dyeworks Mystery Capsule
3 JubJub Power Bounce Retired Mystery Capsule
5 Witches Brew Retired Mystery Capsules
1 Baby Bash Retired Mystery Capsule