I’m still a huge fan of rainwater collection for emergency preparedness, but I understand how people may not have the permanent space setup to do so or simply want the ability to collect rainwater if/when they needed to. This rainwater pillow may be the solution for you but understand that it is a rather costly solution. Regardless, it is a neat idea. The manufacturer says the pillow holds about 1000 gallons of water (and up to 3000 gallons depending on the model)… that’s a lot! In fact, it could be an interesting solution if you DO have unused space such as under a deck or crawl space.