Great bags!
On large totes, I usually put 2 lanyards, different colors. One for keys, one for a small detachable "change" purse. about the size of a pencil case, large enough to put a checkbook in. The one I have my keys on is long enough where I don't have to detach it to actually drive the car. Just put the bag on the seat. If I detach the keys, they are gone. It's like the tote bag is just a big key fob.