When we seek closure, we reach out to the zipper. It keeps us warm, prevents things from falling out of our purses and lets us cram way too much into our suitcases. When it gets stuck, so do we.

Those on the verge of spending their money flippantly may think twice about removing it from the mouths of Woolly Mammoth Design's Monster Change Purses. Amber Adams, 25, of Kalamazoo, the designer ...