I recall growing-up dad kept a bait 'fridge in the garage, and since we camped & fished nearly every weekend (during spring/summer/fall) and having 5 kids and 2 adults to keep in worms, we'd go out when it rained to collect nightcrawlers (and it didn't take long for 2-3 of us to collect a couple hundred in pretty short order). He made a styrofoam box that fit the bottom shelf of the 'fridge and filled it with worm bedding. They got transferred into the carry-along worm boxes when it was time to hit the water.