Take a bunch of the paper cups with no or less paint, so the light can go through. Mark the base with a little cross and use a razor or knife to puncture the bottom of the cup accordingly. Insert the string lights, hang, light and celebrate.
Color Code Your Keys. Could be a quick an easy craft on the days we need something quick -- could have people know before hand to bring their keys if they wanted. but then again people might not want to color code their keys?