While I was a home health nurse (c. 2016), I biked around to patients homes. From working in a hospital, I was used to hand-disinfectant being mounted at every door, so I thought I’d mount one on my bike (which was always parked outside the door). It was a 3D printed mount, and a Frankenstein’ed disinfectant-container made from a pocket-sized one, and the squeeze-head from a large canister. Worked fine, but got stolen.