* Put important things (like keys) in the same place all the time.
* Leave notes on the kitchen counter to remind myself to lock up the chickens at night, turn the dryer on in the morning, call someone, go to a meeting.
* Make sure anyone I'm sharing a house with puts the plastic "Shower" card on the washing machine before they head for the bathroom, or they'll get a cold surprise.
* Leave something on the dash in front of the steering wheel to remember to get gas.
* Keep writing materials handy 24/7.
* Keep a main shopping list to refer to so I can remember what it was that I forgot to put on the current grocery list when I was brushing my teeth or feeding the dog.
* Strangers think I have tattoos on the backs of my hands. No, just notes and lists, odometer readings and reminders.
I do all these things too. If I need to remember to carry something with me in the morning, I put it right in front of the door, so I can't get out the door without either picking it up or tripping over it.
I constantly write on my hand too. Every day there's something written on my left hand. I also put stuff in the driver's seat of my vehicle so I don't forget it too.