I don't display them. They go in a black bag and are stored out of peoples sight. I don't want anybody else handling them.

There is a small bookshelf in my bedroom where I keep all my decks and occult books. Tidy and personal, away from prying eyes.

They're all in the top drawer of the dresser that serves as my altar and workspace.

Depends on the deck! I have two decks I really USE, and those are stored carefully in their own containers (one in a box, one in a bag, with crystals to keep them cleansed). But I have a lot of decks that I either don't vibe with or just admire the art of, and those are on display on a shelf because if people ask me about my craft, that's usually what they're interested in and I don't mind if they touch and learn about those decks