Or catch person on bottom rack asleep and trice up the rack :>}. Nothing more fun than watching someone trying to climb out of a folded up and latched rack at about 1:00am. Then there was the cup of liquid R-12 trick. LOL. Feels like ice water but by the time they get out of the rack it's flashed off and gone LOL.
Send out your family member to the neighbors asking for made up items. A bucket of steam, a BT Punch, a light bulb repair kit, relative bearing grease, squeegee sharpener, and sky hooks. Put you wife or kids at the end of the driveway for mail buoy watch.
Paint every portion of the house gray. Paint the appliances, walls, floor, and outside of the house gray. After they are done make them to chip it all off & do it over because they used the wrong type {shade} of gray paint for the wrong place.
Six feet of mess line, sound powered phone batteries, clean the fallopian tubes...