This brand is ridiculous, but… Crystal clear ice cubes look great in a drink, and are far more difficult to make than “filling a 50-cent plastic tray with tap water and throwing it in the freezer”. The author of the article seems to avoid pointing this out. See https://www.kickstarter.com/projects/danprovost/neat-ice-kit and https://www.kickstarter.com/projects/wintersmiths/the-ice-ba...
1. Boil water twice beforehand
2. Strap a vibrating "toy" to the tray and put it on a solid flat surface in the freezer.
Neither of these solutions ended up costing me more than $20 to make as many ice cubes as I can fit. The hardest part is finding ice cube trays that don't suck.