They dont. They put them in their room and expect me not to look.
In their star fishes
Under the damn tree like any normal person would.
We don't do trees and wrapping and stuff. Around Christmas time, we simply buy stuff for each other as we see we need them. Works pretty well.
With that sentiment, why not just buy stuff for yourself?
Hm...? We simply don't bother with the gift hiding/wrapping stuff (for our individual household anyway; we still buy and wrap gifts for other people like normal). We don't bother with keeping gifts secret from one another (usually), we just do and buy nice things for each other as they come up.