There were several options that I saw. One was a coffee cup holder that attached to the handlebars by PDW. It's pretty nice, but it's more meant for grabbing coffee from a shop as opposed to holding your own brew.
I was doing a lot of research on water bottles and came across this little guy:
|The Stanley Nineteen 13 One Hand Vacuum Bike Mug.|
|The mug fits quite well in my hand and is very ergonomic. And of course, it is ambidextrous.|
|Underside of lid.|
|Interior of the mug|
|The mug inside the back pocket of my C-bag. It's too tall to allow the pocket to close, but that's ok since it allows easy removal.|
|The mug fits securely in my friend's standard water bottle holder. He is also ridin' dirty.|
On my current trip to Denver I brought the mug along. It was empty so that I can take it through security, and then I filled it up at the drinking fountain before my flight. Now I didn't have to wait for the flight attendant to bring me a drink when I was thirsty... this was actually really great for when we were waiting to take off or to get off the plane.
|The mug in an airplane seat pocket. It's a little big, but it definitely fits.|
|Stowing the mug in the exterior pocket of my Tom Bihn Aeronaut travel bag.|
The vacuum construction seems to hold drinks at their temperature pretty well, but I haven't done any comparison tests or anything. I suspect that it wouldn't be better than the Hydro Flask at holding temperature based on this comparison, but I would hope that I had finished my drink before a few hours have elapsed.
In conclusion, I'd give the Stanley Nineteen 13 One Hand Vacuum Bike Mug a big thumbs up as long as it stays leak-proof (which I foresee it being for a while)!