Uncomfortable underwear and shoes.
Anything below my elbows. Years in healthcare have made me loathe having things on my wrists /fingers.
Ditto long nails. They might look pretty but having seen the germs they can harbour lit up like a Christmas tree under a special light even after a good scrub I can't get past the ick with them. They're grim.
Haircuts. My hair is currently down to my bum but I like it that way. It's red, shiny, wavy and actually looks pretty good. It needs length to weigh it down due to a cows lick and a double crown. Didn't cut it over lock down except to trim a few frizzy ends and have finally managed to grow out the layers every hairdresser in existence seems to insist on. I fucking hate layers. They mess up every hairstyle that isn't 'down'.
Washing my hair more than once a week. It's now in far better condition and I have an awful lot more time.
Jeans. I'm short with a big bum and a small waist. They never fit and aren't actually that comfortable. Give me a dress, a skirt or a well tailored pair of trousers over jeans any day. Leggings and yoga pants even better.