I have a couple clear pyrex bowls that I put water in, toss in 3 of the family sized tea bags, toss in the microwave for 6 minutes. When done, use a slotted spoon to squeeze out the tea bags, and remove them. Pour it into the tea pitcher with sugar already added, then stir a minute to dissolve the sugar. Add cold tap water, and it's done. The pyrex washes clean, doesn't stain, or pick up any flavor. For coffee, I have a typical 12 cup coffee maker. Even when it's just me, I make at least half a pot of coffee at a time.
Just before Dd moved in, and it was just me drinking coffee, I thought about a Keurig type coffee maker. Having a fresh cup of coffee every time I wanted one, sounded appealing. I had read an article saying they were finding they were prone to mold build-up in certain places, even with good cleaning, so I didn't get one. Supposedly, they've corrected that problem, so they can be thoroughly cleaned now. The price of the pods, depending on what you get, have become fairly reasonable. No, I would not reuse a pod. I can NOT see them being all that practical for a family with multiple coffee drinkers.