Marion, that covers it really. Excellent coverage.
I had a cute toy dog. On a lead so that he could be cuddled but not pinched. I once had to compete with another busker who had a sickenly cute and pretty little daughter. Little cutety skipped up to everyone lisping, "I love you! I wealy love you!" If you've got one of those, or can borrow one, you can't loose.
Just one thing I noticed in my busking days that I could add: Solo busking pays better, not only for the obvious reason of splitting the profits. People admire your courage if you go it alone. They told me that all the time. I'd like to get back to busking. Maybe I will some day before my voice gives out entirely. Joy