I couldn’t find any HSW bottle holders that really fit what I needed, so I ended up designing my own. Most of the ones I came across either didn’t support the sizes I wanted or wasted space on the Honeycomb Storage Wall. I use a lot of small bottles, so I made a set that covers 13 mm to 35 mm. One thing I specifically designed for: holders that are 20 mm and smaller can sit directly next to each other on the HSW without interfering, so you can pack them tightly and not waste cells.