if you would like to undercut jewish business in a fun little way, sodastream obviously makes a ton of money through their refills, the canisters have special caps that make them annoying or impossible for a regular person to refill, so they spend $20 or more to get a new canister or to get them refilled. Instead you can take them apart, and either fill them with the correct amount of dry ice or just refill very slowly.
https://www.youtube.com/watch?v=BeZmesxhk8Y https://www.youtube.com/watch?v=l-a3pISQLQg
(post is archived)