I can relate a cup wearing memory that would probably qualify for the "anything else" category.
I belonged to a mostly straight college fraternity that used cups as part of the pledge training experience.
We called it "protecting the future chapter assets"
Pledges were required to wear a house uniform that consisted of white tee shirt, white gym shorts (both labeled in big
block letters "PLEDGE"), with a jock and cup worn underneath. The jockstraps were Bike, and sold by a campus trophy
store with the fraternity initials and PLEDGE printed on the waistband. The cups were the flat triangular plastic ones that
provided little room for one's stuff. Regardless, every pledge had to carry a big black marble in the pouch to keep him
constantly reminded that he could be blackballed by any active for any reason, or no reason at all.
At first pledge uniforms were required only for pledge class meetings, pledge exercise sessions and for pledge work chores, but as hell week and initiation time approached, they became the fashion de jour nearly 24 hours a day.
Our house had a huge collection of 8 mm porno flicks, and on movie night both the members and pledges would gather in the
chapter room to view the the "stimulating" shows. Actives would hoot, hollar and constantly paw their puds during the bed top
gyrations, but the pledges were required to stand silent at attention, arms to the sides with their cocks firmly packaged in their
cups during the entertainment.
After I was initiated, I did everything possible to avoid any sport or activity that would require wearing a cup.