I make my coffee at home and put it in my vacuum bottle, which fits one of my bottle cages. It's ready to drink as soon as I get to work an hour later. If it's a hot day when I'll need two bottles of water for the afternoon ride home, I fill the vacuum bottle with cold springwater from the cooler and save it for the last 20 minutes of the ride. Hard to beat ice-cold water late in a ride!

RichC