Originally Posted by Tim-Rodriguez
I found this tube with spung water tight lid in a the woods where they did paint ball events.
I have several of those in my paintball gearbag.
Just make sure to secure the lid. They are supposed to be easy to pop open to reload in the middle of a battle. You may have noticed some small piles of unshot paintballs on the field from a couple of those popping open a bit too easy.
There's a ton of different harnesses, mounts, etc. for those containers. I'm sure there's some creative ways to use them on a bike.