- We have a few LifeStraw personal water filters [1]. These things are awesome -- one of them filters up to 1,000 liters of drinking water. Very reasonable price too ($20, you can get them for cheaper occasionally on sites like woot). I'd argue these are the most important items we own.
- We have an abundance of canned goods. This isn't primarily meant for "prepping", but we always buy more canned goods than we need when we find them on sale.
- This won't apply to everyone, but we have a large amount of heirloom seeds we've collected over the past few years. We have ~9.5 acres of land, so if things were to ever get rough (and plants still grew) we'd be able to get food that way.
[1] - https://www.amazon.com/LifeStraw-LSPHF017-Personal-Water-Fil...