To be a photographer is to lose lens caps. They slide under stacks of paper and get kicked across floors. But armed with a shampoo bottle, an X-acto knife, and this guide, you can make your lens caps stay put. The simple system involves attaching a plastic hook to your camera strap and an elastic hoop to your lens cap. Then, instead of being tossed aside or slid thoughtlessly into a pocket, the lens cap stays hooked onto your rig, easily accessed, at all times.