I definitely am the bottom feeder.
I have a glass display bookshelf, suited to hold about 50-60 cameras.
It usually holds 25-40.

I buy at estate auctions and garage sales, and rarely pay more than $20 for an old consumer grade RF, or SLR 35mm.
I also have a reasonable number of old cameras gifted to me.

I fix them up, shoot a roll at a minimum, and then display them as a pool of workable display cameras.

I do try to sell then off annually at a swap meet, or give them to people interested in getting into or back into film.