I have a regular wallet with everything you can possibly think of.
But when I am going out without a complicated purpose (just to walk, or to the grocery store), this is what I carry:
I put a $20 bill in there, one credit card, driver’s license, and my necessary rewards cards.
With my keys, and NO CELLPHONE (I never remember to carry it with me), I’m good to go.
It’s all I need, and I have never wanted otherwise.
I even get complimented on it, and it fits nicely in my hand, or my pocket.