My own costume was my favorite--I wore my yoga pants, a sweatshirt, purple boa, & a really pretty crystal tiara. Okay, you say "big deal, whats so special about that?"
Everytime a big kid knocked on the door, I opened the door really, really fast & screamed at the top of my lungs. It scared the crap out of the kids EVERY TIME! It was awesome. DH & I laughed all night.
How did I differentiate between big kids knocking & little kids? Little kids usually "knocked" with an open palm or it was very light tapping. Bigger kids knocked really hard.