Get rid of 30 items in your house. Throw away or donate as appropriate. If you are having trouble finding 30 things, check your fridge and medicine cabinet for expired items or get rid of magazines and books. The great thing about media is that if you get rid of it and regret it, you can most likely find a replacement online for cheap. My mom just bought several years' worth of her favorite magazine from the '80s on eBay and libraries are great resources, too. You can also count it for an item if you consolidate two things into one container and throw away the empty one (i.e. shampoo, lotion).