With 6 people in the house, laundry time is scarce and we often have to move another persons load to the dryer so we can squeeze in a load of our own. My daughter was horrified when she went to the laundry room to retrieve her clothes only to find that they had been put in the dryer. An entire load of her favourite brand that she NEVER puts in the dryer!
We now have this nifty magnet that gets put on the front of the washer if you have put in a load that does not go in the dryer for whatever reason! 
It prints out at 100mm round by 3.5mm thick.
There is a pause at layer 15 to allow for embedding eight 12mm x 2mm magnets that will hold it to the front of your washer.
Just pop them in at the pause and keep on printing!