Keychain Glass Breaker
Two tools you hope never to use, on your keys.
$14.95
Free shipping, and 30 days to send it back for a full refund if it isn't right.
What it's good for
Point and blade
A hardened tip for the window and a recessed blade for the belt, so both jobs are covered by one small thing.
Recessed cutter
The blade sits inside the housing, so it cuts webbing but isn't exposed against your pocket.
On the keys, not in the boot
Kept where you can reach it from the driver's seat, which is the only place it's any use.