You know those “Magic Erasers” that can wipe stains off seemingly any surface? They’re really just melamine sponges with a marketing budget, and you can get 20 off-brand (but well-reviewed) equivalents for just $8 on Amazon (after clipping the $1 coupon), an all-time low. I used these after moving into a new apartment last year, and they made quick work of all of the scuffs I made on the walls.
We’ve seen packs with more sponges for about the same price, but they usually ship from China, whereas these have Prime shipping, and are even eligible for Subscribe & Save. They’re also twice as thick as most of the inexpensive competitors on Amazon, so they should last longer and be easier to use.