One of mine is when I finish wrapping my hair up tightly in the towel to dry after washing, I whack the towel where it’s tucked in, kind of like encouragement to stay tucked for the duration, kinda like a coach does when sending the kids onto the playing field.
During the cold season, I will give all metal door knobs and door handles a little whack first with my hand before grabbing. I hate the static shock that may or may not be waiting and the whack absorbs it in a way I can anticipate it.
I thought this would be more common but I don’t really see anyone else doing it.