When you're 3 years old, you have some good ideas about what's what. For example, when your mom takes you out for an al fresco lunch at the playground, you know exactly what it is you need to pack: three jars of peanut butter and two Hawaiian shirts.
Don't let anyone else carry the bag. And don't, whatever you do, let your mother tell you that you don't really need all that. She just doesn't get it!