One special day each spring, Austinites cover Pease Park like mushrooms after a good rain. Fairies mingle with mermaids. They dance around a maypole and sling hula hoops around their waists.

One simple purchase can make a huge difference in the amount of time and effort you’ll spend on this task – probably ½ of a day or just ½ of an hour. And we bet nobody wants to waste their time and ...