Amazon has the 20-count 3M Command Refill Strips (Small, White, 17022-ES) for $2.38 with free shipping on $25+ or with Prime. Includes 20 indoor small replacement strips. they stick to many surfaces, including tile, wood, metal and painted surfaces. #1 Best Seller in Utility Hooks.
Has excellent Amazon Reviews.
Amazon has the 50-pack Hanes Reusable Cotton Face Masks (White) for $11 with free shipping on $25+ or with Prime. Features 100% Jersey Cotton 3-Ply Masks, anti-microbial finish lasts up to 10 washes. The CDC recommends use of cotton or cloth face coverings in public to reduce community spread by asymptomatic persons.
Has good Amazon Reviews.