Beyond typical hoses, faucets, buckets, and water bottles, what other tools and equipment do you find useful for helping you and your group quickly refill your water blasters before or during a game?
Fast-fill water bottles are nice if you have them, but they also need filling. Funnels definitely have their uses, but not sure how often others make use of these simple devices. There are specialized things like fast-fill/QFDs, but these are not so common or easy to find.
What else is useful to have to make filling/refilling water blasters easier?