We have keys in this house and no clue what they might open.  We don’t have automobile keys that we know nothing about but house keys are a dime a dozen around here.  And, because my mother drives my car so often, my house keys and truck keys are on two different key rings. 

My husband has about six different sets of keys for various locks at home and at work.  I think it’s about time to get him some promo keychains so he can keep his keys separated and keep up with what key opens what lock instead of just continuously throwing them in a drawer to never be seen again.