For the last month, I've devoted about one Cool Stuff post a week to the topic of "making your life more enjoyable through minor upgrades of mundane household items." Whether it's never having your lunch explode in your bag again because of GlassLock containers or being able to get dressed in the dark thanks to motion activated lights, spending a few bucks in the right place can not only make life much more convenient, but end up saving you a bunch of money in the long term.