For a long time, I have used a wallpaper prep tray to help clean and sanitize longer items like racking canes, auto-siphons, spoons, tubing and beverage out dip tubes. It works great. These also work well for storing longer items.
One downside of those is that they are a bit on the flimsy side. I generally recommend stacking a couple together to give them some extra strength.
These types of planter boxes are another potential option. They are generally sturdier than wallpaper prep trays and they’re about the same length. Since you can get away with one your total cost may end up being less.
Novelty 2302, White, 30-Inch Poly-Pro Plastic Flower Box Planter – note that multiple variations of this product may be available, as such a different version may appear at this link
Five Star recommends limited contact time with ALL plastics. See: Star San Tips – Materials Compatibility + Do Not Soak
Make sure the components you use are compatible and rated for your intended application. Contact manufacturer with questions about suitability or a specific application. Always read and follow manufacturer directions.