All Locked Up

I forget when I lock things, so I made a key chain with little plastic reminders when a door is locked or appliance is on.
Instead of worrying, I now just look at my reminders on my key chain.
I was in a rush this morning and forgot to set the reminders… Or did I?
Or did I forget to reset the reminders from when I last unlocked those things, and then forgetting to lock them again, so…
I throw away the key chain, lock the locks, sit in my chair, and hum happily in the darkness.
All locked up.