I use a Keurig capsule machine that does 8, 10, or 12 ounce cups -- just press the size button you want, insert a capsule, put a cup under the spout, and press a button. The water tank can be filled in place with a pitcher, or removed and filled at a faucet. My personal preference is San Francisco Bay French Roast, but any Keurig capsule will work. It's a very simple process, and a light flashes if insufficient water is in the tank, but I can't say if it would be a problem for an individual with a sight issue.
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