Bubble Wrap

This is a true strip. For a period of about a month when I was a freshman I cut out doormat sized pieces of bubble wrap, and stapled it in front of my door. So, naturally, it would pop whenever anyone came in and out of the room. It was a lot of fun. But, sadly, I ran out of bubble wrap. I would totally do it again though.
Although, it really only works on an internal door, because bubble wrap isn't very useful for wiping your feet on.

Everyone did love the bubble wrap though, and would stop by just to step on it.