According this the local news station in Huntsville Alabama, the ubiquitous cheap Mr. Coffee pot in hotel rooms is often used as a just-in-time makeshift mini-laboratory to make the drug meth. It :

Ask just about anyone in law enforcement, and they’ll tell you to be careful if you ever brew coffee in a hotel room.
“I know enough now that whenever I go to a hotel, regardless of how nice it is, I’ll never use a coffee pot,” said Marshall County District Attorney Steve Marshall.

Instead of brewing coffee, coffee pots are sometimes used to brew methamphetamine. And since meth labs in hotels aren’t anything new, Rick Phillips of the Marshall County Drug Enforcement Unit says there’s definitely a risk. “The coffee makers that you find in every motel room is an ideal heat source. They mix it up in the coffee pot, put it on a heat source and let it sit there and cook,” said Phillips. It’s common knowledge to those who fight meth, but a shock to your average citizen. Phillips says it’s pretty easy to tell if a coffee pot has been used to cook meth. It will have a dark reddish-orange stain.