Often, my job as a handyman/remodeler requires us to remove and dispose of interesting and useful items that people no longer want. I've come home with some incredible stuff.
Such as:
4- 2' two-tube flourescent light fixtures.
3- 5 blade, 4 light ceiling fans.
2- 4' x 2.5' countertops, white.
1- corner countertop matching the above (5' from corner in both directions.
and...my point here...
1-6' x 2' x 2' Oak cabinet used to hold an over/under oven setup in a fancy North Shore home.
Nice, huh?
Don't get me wrong, it is going to take some work to get it to display condition. Trimwork, a door with glass, drywall, corner round, lights, Etc.
My point is that garage sales and moving sales and resale shops all contain these kinds of options that, with a little imagination and a screwgun, can accomodate most simple storage and display problems.
I have two plexi cigar display cases I got for ( I think ) $25.00 each. Each holds about 12-1/35th scale tank models.
Oh yeah, on one job I brought home a totally awesome entertainment center that would hold the T.V., stereo, video/ DVD/ playstation2 and about 50 models as well as a 5'x2' diorama or trainset! But, as soon as it got home, the better-half confiscated it for the living room and said absolutely NO MODELS! It looks really good in the L.R. so I relented. Someday...
Look around for real wood cabinets and shelving units before you go to IKEA or WalMart. Melamine looks OK for a while, but it just doesn't last in my opinion.
Hope I helped,
Cuhail