Oh this is a fun question! I've really enjoyed reading everybody's responses. My number one smallest collection would have to go to the Intellivision. I own zero games and zero original hardware, but I do own the Intellivision Flashback. The Intellivision if the first console I remember from childhood, but I've never owned one in my adult years (It's been on my wish list for years). Second is a tie between the 3DO and 32X. I only own legitimate copies of three 3DO games, but I do own a 3DO. I own four 32X games, but don't have a 32X (at least not a working one). I hope to expand my collection of games for both systems, but since I owned neither as a child I'm not as nostalgic for either which makes collecting games for them a low priority.