About those car keys... most cars come with valet keys that will open the doors and start the engine but not open the trunk or glove compartment. I'm lucky enough that my valet ket is completely flat - not bulky at all with the black plastic of most car keys. Because of this, I've learned to put that key in my wallet. Countless times I forgot my keys in the ignition, and each time it's simply take out the wallet and open the door

try it if you have one of these keys, it's really useful!