Can offer these retired caps:
2 Retired Altador Cup Mystery Capsule
2 Retired Dyeworks Mystery Capsule (2019)
4 Witches Brew Retired Mystery Capsules
1 Baby Bash Retired Mystery Capsule
3 Retired Dyeworks Mystery Capsule (2020)
Hard to part with or trade.
Some items will be easier to trade than others dependent on what is offered.
Mostly buyables, some retired.
Not actively seeking everything on this list.