Why YSK: If you ever need any of these things (eg you fell into hardship), just look for the nearest Sikh temple. While you’re there, please respect their culture and cover your hair while you’re in the prayer hall or in “langar” hall. A langar hall is where the food is served. If you like you can also volunteer to help in the kitchen and elsewhere.
A handkerchief or even a tissue would do, or a cap if you’re typically wearing them American style
Gurudwaras (Sikh temples) usually keep a bowl of big handkerchief-like cloths for people to tie on their heads. They look kind of like a bandana after tying.