Something I used to collect pretty passionately was retro video games.
My focus was on Sega, particularly the Mega Drive (or “Genesis” to any Americans) and their last console, the Dreamcast. I also had a few Master System games that I could play via the Master Converter and tried the Saturn out for a little while but never really go on with it.
Anyway, at the height of my retro collecting I had six consoles (multiples of some) and around 150 games. It was a lot of fun playing the older games and the magazine Retro Gamer fulled my desire to get more.