Lens Cap Holder
A cap is essential to protect your expensive lens but there's never a good place to put it while you're shooting. Until now. The simply-named "Lens Cap Holder" threads through your camera strap and provides a secure place to stow the cap. The extra-cool thing about this is that it's produced on demand to your exact specifications when you order it from Shapeways ($15 and up, depending on the size and materials you specify.)