I just broke my leg and got my first set of crutches. So naturally while waiting for surgery to install screws and a plate into my leg I needed to check out what I would want for 12 weeks of crutches. This brought me to the beer holder that Reedster remixed (thanks!) to sit lower on the crutches. Being a knuckle-dragger that appealed to me. I took his design and refined it a a little larger in diameter so that my water bottles and tea/coffee thermos would fit, along with the eventual beers once the meds aren't in play. While the docs were cutting me open it was printing and done by the time I was done.
**update - Dec 2018 ***
My wife broke her foot and now she's on crutches. She subsequently broke the original holder than lasted be throughout my crutch time. I've now uploaded a version 2 of the holder with some reinforcement where it snapped and added a cell phone channel to keep her phone more secure while in the holder.
Printed in PLA, had to take the handle off to get it in place, but seems good and stable now.
3+ walls for durability