I've had to cut back my caffeine but like to have one, nice, hot drink, maybe 2 if I keep the caffeine to a minimum. I'm trying to figure out something that would be easy to fix/brew in the tiny camper I'll have on my truck.
Hopefully this isn't too far off-topic, but how about hot tea ? I had to cut back on coffee as well when I got older, so I go for a hot mug of Irish Breakfast Tea with sugar and milk in the afternoon (not too late, it'll still keep me up at night then). Tea has 1/2 the caffeine of coffee and is super easy to make. Good tea bag in a mug, boiling water, and time. My wife switched to tea full-time when coffee wasn't agreeing with her anymore.
Here's what I use: a Barry's Gold Irish Breakfast teabag, steeped 5 min in a mug (I like my tea strong), then a spoon full of sugar and enough 2% milk to lighten it to my taste. Anything over 2% is just too "rich" for tea in my book, YMMV. In the UK, this is often referred to as a "Builder's Tea," as it is a colloquial term for the typical cup of tea drunk by contractors and laborers during a break.
The key is to use a good quality tea, like the aforementioned Barry's Gold or Yorkshire Gold, and steep it long enough (4-5 min) to get the flavor extracted.