I think money is one of the most important things not to leave home without, however I have become used to my mobile phone now and feel safer being on my own when I have the mobile with me, so I would have to say money and phone.
Clean Underwear and a happy disposition!!!!! I always have plenty of smiles to share around! But seriously,apart from this essential,I always have my purse with all of my ID and Medical information which I carry with me constantly!
My phone and my wallet. I've had to turn back for both my phone and my wallet at different points in time. I've left home before, boarded a taxi only to have realized that I've left my wallet. That was very embarrassing I didn't know that driver very well. I had to wait at the taxi stand at the end of the day to see if he would drive in so I could pay him. I did.
I check my pockets before I leave home to go on the road and before I exit a taxi to come back home.
I have NO crow's feet, & I attribute that, like you, to my sunglasses!
I've good Zeiss glass in mine, & they are the larger sized ones' covering eyes' & adjacent skin. They're the highest anti-glare legally possible for driving as well.
The pair I wear daily are 30yo & have had to get metal (not plastic) 'arms' replaced a few times!
Apart from the usual items one would expect to find in a handbag, I always have tissues, hand sanotiser, mouth gel and a cardboard drink coaster because if I'm at a club the waiters don't bring coasters with cold drinks and I don't like condensation dripping from the glass onto my clothes.