I bought my wife several display cases from collectible stores for $75-$150. One, the $75 cheapie, I recycled as it was too small for her. Octagonal, all glass upper - with three glass shelves and a mirrored bottom shelf, it has just enough room for most of my knives. I got some display stands for the Bucks, Pumas, Bark Rivers, etc - fixed and folders. The larger ones lay between the shelves on the glass. The twin halogen lamps do light them up nicely, and the lower cabinet stores their sheaths and boxes. Both are locked - but that key is used often, as I sometimes just have to change my EDC, etc - or fondle them.
I was going to get pairs of some - one for display, one for looks. I couldn't afford that. I have even carried my most expensive folder - a Buck Custom Shop 110 in teardrop Damascus - but have to admit that a basic $25 110 from Wally World seems better suited for such. I didn't get very far duplicating my Buck 102, 103, 103, 119, & 120 - all 'BR' - brass/rosewood - and too pretty to use. I so far have only the 119 & 120 in phenolic/aluminum as 'users' - great kitchen knife, that 119! I did get an AG 192 in S30V, while a regular 192, still as beautiful to me, is my older 'woods walker' user. I do have a few I'll likely not carry - purchased at a 'deal' because of their looks/sentiment - 'collectors' and the like of the Puma 'White Hunter'. Still, looking at them and 'fondling' them is 'use', I suppose. I certainly don't 'need' most of them!
A great next question might be "Which five knives would you keep, if you really had to part with the rest?". You might just find the real 'users' out there!
Stainz