My teenage daughter came up with this tip. With two teenage girls and me in the house, there's a lot of shaving going on in our shower. I buy a big package of disposable women's razors at BJs for a pretty good price, but my daughters think it's gross to share a razor, and I'm afraid of using a rusty one, since I don't have my glasses on in the shower. So my daughter started twisting a colored ponytail holder around the handle of her razor, and now we all have a different color band on our handles, so there's no danger of sharing.