I'm not sure if this really counts,but-

I work at Subway and for a few days the toaster was broken. People reacted very sorely to this, so I made this sign as an attempt to bring a smile instead of instant anger and the inability to order toasted sandwiches (hungry people can be very irrational). For the most part it worked, it made for nice small talk as well. Now the toaster is up and working and all is good in the world :)