The hard plastic trays and vinyl case that secured many a Star Wars Kenner action figure in the past are greatly needed in today's 3-3/4 inch collecting world. The only thing that was recommended were these Plano 2-3700 Prolatch Stowaway cases that I ordered off Amazon. A four pack of cases ran $26 and each could hold 12 figures. Unfortunately, there is some debate on the message boards on whether the soft plastic can degrade the paint and plastic of the figures. Perhaps several collectors have used these on Kenner Star Wars figures and seen that happen. I hope not.
In the meantime, they are a great way to store and display your ReAction, Big Bang Pow, and Zica figures.