The internet has made it possible to fulfill at least the duffle coat desire in a moment of impulse purchasing. Well, an hour of careful and considered browsing followed by a moment of impulse purchasing. I recently talked to two other women finishing up chemo -- one of them was going to Europe for two weeks, and the other was buying herself a new couch (and getting rid of the cancer couch she'd spent the last few months on). In the grand scheme of budgeting such extravagances, a fall coat isn't all that unreasonable.
Until it arrives, perhaps I will go read some Enid Blyton Famous Five or Secret Seven; somehow boiled wool duffle coats inextricably seem to go with picnics on the soggy moors, accompanied by ginger beer and the sundry fleeting joys of childhood.