I thought I was the only carring scissors around in my CVS bag. Never thought about putting a calculator in there though. I have a spiral notebook in my bag that I write my "plan" for the day on. As I shop I jot down prices (to keep up with total), coupon value and ECB that will generate. Easy to check and see if I get all my ECB's. And yes my family think I am nuts too but they like to shop in my stash.
My niece refers to this as "shopping in my aunt's closet". She loves to come visit me to see what I have new for shampoo and body wash.
I write my plan down too - before I ever leave the house. And I have learned to check before I leave the store to make sure that all my ECB's printed.