I really want a deposit/membership at my local grocery store for reusable bags. I don't want to remember them. I want to use some standard, reusable ones at the store, and then be able to return them in bulk for my deposit back. I end up taking paper bags in SF because I constantly forget to bring reusable ones, despite having dozens at home.

The habit to get into is have a non-bulky resuable bag that folds up nice and flat and keep it in a jacket pocket or some other location that's available when you're out and about; and to put the bag back in that place when you finish unpacking at home.

Relying on remembering before you leave the house or whatever is much less effective, I think.

I had the same problem. I keep mine in my car now, which had helped.