His first stop was the local . He knew they had an exchange program where he could swap his empty canister for a full one at a discount. He headed straight to the Guest Services desk, made the trade, and felt a small victory.
By noon, Leo was back in his kitchen. His soda maker was hissing happily, and his kegerator was pressurized. Whether it was the convenience of a , the industrial scale of a gas supplier , or the specialty stock of a sporting goods shop , Leo had found his fizz.
On his way back, he passed a . He remembered his younger days spent playing paintball; they still carried the small, portable CO2 canisters for markers and even threaded cartridges for emergency bike tire pumps.