While there are plenty of carousels on the market, the simple metal version from Keurig is ... Check out the gold Krewey Coffee Pod Holder that holds 27 pods and costs $43 on Amazon.

You pick a pod, stick it in the holder, press a button, and voila: Hot coffee with no mess. However, it's easy to overlook the upkeep of the machine, especially one of its most important parts ...