Well for mementos and things, I've got boxes and boxes. Lots of them still in my bedroom, either in a couple of large black trunks beside my bed (holding things going back a decade or more, and a lot of stuff from Germany), and there are a lot of clear plastic flat containers under my bed as well.

Sex books are gone, were loaned to someone and never returned....
Did have some condoms and KY for a while, but those got tossed last time I did some serious cleaning.

There's still some videos (hidden way back in a corner of the closet) and DVDs (hidden in a space in the desk, where one would not normally look.