Novelty erasers are usually very bad at erasing, and when you use them, you ruin the novelty shape. This is not really a bad thing. It is a neutral thing. The original shape usually isn't that fun, so nobody really cares.
The coupons are almost never that great of a deal, and even if they are, you can almost always either print them off of your computer or get them right in the store. Skip past the coupon section because it does not matter.
Scientists should not have had a controversy over what quasars are, because there are a million better things that they could have done with their time. Want to know how to be an irrelevant waste of space? Just bring up quasars next time you're at a party.