Find a way to fill their whole room w/ STYROFOAM PEANUTS !!!!!!!!
Take 'em forever to get them all out!!!!!
I've done that to someone before!
Do you have a drop ceiling?
Lift up the panel in front of the door, climb up, and take up the panel on the other side, then drop the peanuts in from above.
You can fill the entire room to the ceiling that way!