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?
You can use Febreeze to clean a dry erase board that just won't erase (because the ink is very dried on) . Spray the board and wipe, it also helps "recondition" old dry erase boards. - worth a shot since my white board isn't useable right now.
42 Ingeniously Easy Ways To Hide The Ugly Stuff In Your Home