There's nothing like waking up with a fresh cup of coffee. And while we like the flavor, we really need that jolt of caffeine ...

Cost. In the long run, you'll save the most with the reusable K-cup adapter. The costs we cite below include one cup of coffee daily brewed with beans bought for an average of $10 per pound.

It can be magical popping a K-Cup into a Keurig and 30 seconds later having the perfect, single-sized caffeinated beverage between your fingertips. Your brain gets a break from calculating the ...