Mabuhay and Welcome to the forum MrTrick.

So nice that you still have your original toys
!. As for display cases I would suggest glass ones like say, the Detolf Display cases sold at IKEA.

It'what I use for my MPs... of course there are more types of shelves that they sell which are upgradable to have a glass door and some are with adjustable shelves so you can csutomize the space allotment for your G1 figures. Give IKEA a visit to give you an idea coz they have some display set ups in their stores - to showcase their wares in a "what if" scenes (kitchen, bedroom, mini office, small apartment, etc). Hope we see your collection pics as well. Do post and make your own collection thread when your able to. Cheers!
Wanted AM partner Vanguard, Myclones Dirge, G1 Victory Leo, e-hobby Dark scream ( the black version), e-hobby Magnificus
Parts- AM partner Basher-side guns, G1 Actionmaster Elite Windmill's blades[I][B]