Less than $5 for a 20 pack at target/walmart ect. Usually in the appliance or automotive section. A small keyring works well.
Rob showed me these. They're meant to serve as reminders for when you put a disk lock on your motorcycle.
$5 on amazon. Coated steel cable and contracts to a very managable size, so they're not in the way. I use them on my game clips as well (notice the plural)
