Hi!
I've only my own room to display, even if I don't have as much ponies as you, I had to make choice.
First, I bough some anti-UV film for my windows, it helps a lot, dealing with the fact sun goes on ponies and figures!
Also I've only choose LED as lightning.
I've put my favorites ponies in a glass cabinet:
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loginOther are on the chest under:
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loginFrom time to time, I change my display. It may be only one or two ponies I move, but it's always fun to rearrange the colors!
Other ponies are in another glass cabinet:
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loginThe best I can advice you is to do somethin' that please you to see regularly. The only thing I avoid is to puts sensitives ponies like pink fading manes in display.