Key and USB tethers
The Tether is my way of dealing with mislaid keys and USB sticks. They are not for house or car keys but are idea for keys to the:
Tack room, etc.
They are large enough to make it hard for them to be accidentally left in a bag or hidden under a pile of papers.
When not in use, looped tethers can be hung on the wall, easily seen when they are not there and are visually interesting.