I had all sorts, including a wig, which was very hot and uncomfortable but did look good. (Also great for going out in cold windy weather!)
My favourites were a collection of "Georgie Girl" type hats. But bandannas etc are OK.
DGS1 was three when I was having chemo, and I was worried in case he met me on the landing without a head covering, so I faced up to it. Wearing my wig, it told him about the medicine and so on, then took my wig off to show him. He looked at me in amazement then said, in awestruck tones:
"Nannie, how did you do that"