I bought a high speed sheet-fed scanner to be used with paperless-ngx based on a recent thread on HN. Before that my filing system for financial statements and other important documents was verging on meltdown and causing me considerable anxiety, but now that burden has been lifted. The scanner is configured to send documents directly to a home network file server that's always on and will store them until the next time I boot my desktop rig, so it's nearly frictionless to drop every piece of mail that comes through the door immediately into the scanner, which has a box under it, instead of piling it up on my desk where it used to stay for months. I wish I started this years ago and I thank everyone who contributed to that thread. Honorable mention: a printer with liquid ink tanks for £100 with thousands of pages worth of ink has just replaced a £30 inkjet printer I got ten years ago that made me cough up another £30 or £40 pounds every time the cartridges ran out. It's expensive to be poor.