Necessities for MSing:
Sharpie
Small pouch in car to keep spent items and receipts
Rubber bands to wrap gcs and receipts once used
Pen
Calculator on phone
Extra deposit slips from many banks
Cargo shorts or many pockets or multi sectioned hand bag
A system of which pocket does what
Running shoes to chase or flee
Signature and printed name stamps
And other things Jason Bourne might use