Bikespike GPS Tracker
Spybike GPS Tracker
When it comes to bike seats, there's Brooks and everyone else. They're so excellently constructed that calling them "bike seats" is downright inappropriate.
The Nutter - The next generation of Bicycle Multi Tool by Mark Windsor - Full Windsor — Kickstarter
Spybike GPS tracker in a seatpost
LightSkin seat post with LED rear light - Black/White/Silver
Helios - Transform any bike into a smart bike.