I was searching the shelves in a thrift store and came across a military buttpack made to use with webbing load gear, much like a civilian “fanny pack.” I immediately saw the potential for use as a bike bag: with all the MOLLE webbing mounts on the back, it could be mounted on a rack as a pannier or looped over the handlebars.
I’m spending the cold rainy days assembling a bikepacking rig. I’m thinking out loud with this setup but I think it has merit.
I ran across an Ikea VARIERA plastic bag dispenser for $2. The core section struck me as a perfect support to use with a stuff/dry bag for a bikepacking handlebar or cargo rack pack.