Honestly, try under the bed?

If you have a lot of stuff under your bed, just shove it in a box and keep it there. Unless under your bed is clean, then it will stick out too much. But you could start putting boxes under there, like shoe boxes and stuff, and then once you have a collection, put your stuff in one of the middle boxes.

This is what I do, because I don't expect my parents to be snooping around, especially not under my bed. My stuff is in a locked metal box inside of a computer modem box.

Also, something clever I done is make a tear under my bed in that stuff, then just put stuff up there. I don't use that anymore though.