On my suggestion, we went to St. Ives for the day, which is one of the more popular Cornish towns. It has been popular with artists for generations, and has recently opened a Tate gallery on the waterfront.
I couldn't settle after that, but I'd chosen the right town to be in. St. Ives is full of little shops; high street, independent and touristy. I had plenty of places to rummage in safe (I hoped) from seagull attack.