The new Prometheus Beta QR makes for a great keychain light that (if you choose copper) will age gracefully.
The Ganzo G706-2 pocket knife is small, light, and well made. The integrated pocket clip, lanyard hole, and thumb-stud blade release make it a nice pocket knife for every day carry.
The cool team over at form•function•form have a cool leather key fob carrier for a Leatherman multi-tool and peanut lighter.
Spyderco Police Model stainless steel knife has been a popular carry knife for over 20 years.
UTG Multi-functional Tactical Messenger Bag provides a solid portable toolkit bag with straps to keep it in place.
Color-code your carry items with these inexpensive keychain containers.
Pocket dump including a Leatherman CS4, and Maglight flashlights
Althlights provides a small high-powered LED light solution for the safety of runners.
Thermodo has created a small temperature data collecting sensor for your phones audio jack.