Jared Gendron deals in volume. Right now his workspace is cluttered with plastic bags full of tambourines. They’re useful for warding off Anika, his feisty mixed-breed puppy, he jokes: She’s terrified of them.

It’s a good thing, because he wouldn’t want her to sink her teeth into one. Each instrument is signed by a famous musician, among them Aretha Franklin ($195) and Kid Rock ($89).