“Well, you see, in all the panic about You-Know-Who, odd things have been cropping up for sale everywhere, things that are supposed to guard against You-Know-Who and the Death Eaters. You can imagine the kind of thing... so-called protective potions that are really gravy with a bit of Bubotuber pus added, or instructions for defensive jinxes that actually make your ears fall off... Well, in the main the perpetrators are just people like Mundungus Hotelier, who've never done an honest day's work in their lives and are taking advantage of how frightened everybody is, but every now and then something really nasty turns up. The other day Arthur confiscated a box of cursed Sneakoscopes that were almost certainly planted by a Death Eater. So you see, it's a very important job, and I tell him it's just silly to miss dealing with spark plugs and toasters and all the rest of that Muggle rubbish.” Mrs. Weasley ended her speech with a stern look, as if it had been Harry suggesting that it was natural to miss spark-plugs