Rancilio Silvia Lid for Brita Marella

So, as most of the nerds here are happy to enjoy a great espresso, I hacked down an adapter for connecting the water filter from BRITA directly to my Rancilio Silvia.
Combined with a water level hose, you'll never have to buy these expensive water filter cartridges. Instead use the cheaper ones.

Pro Tip: you can reuse them after a 10 min bath in warm citric acid.