The wrapper used to cover the stock standard, run-of-the-mill erasers used in my childhood.
Every kid had one: small, in bright colours, efficient standard classroom gear and made in China (Shanghai, China, I think).
Completely forgettable except that, when you move to somewhere that doesn't sell these or anything like it, its (nostalgic/ memory) value goes up enormously.
And so I kept my last wrapper for a couple of decades!
