Post is an imagine with 4 panels: Top title: before you leave the house check you have: panel 1: keys panel 2: wallet panel 3: phone panel 4: the vague sense that you've forgotten something
(I've never made text descriptions before, correct me for points)
I made myself a mnemonic: WICK.
It stands for Wallet, Information device (phone), Cup (I have a habit of leaving my cup of coffee places), Keys.
It's very helpful to stand at my front door think "WICK" and know, not just think, I've got all of my essentials.