Just a small riddle for you to figure out. It's pretty simple and you need to find out what these all have in common and you get to come to the picnic! (And please don't hate. It's just a small riddle my teacher gave to the class.) I'm going to a picnic and I am bringing the following things: •Chair •Pie •Map •Ball •Food (Keep in mind that I really don't being chairs or any other weird item. Just find out what they have in common.) If you find the type of item I am looking for you get to come along.