Privatix’s free service lets you generate dummy email accounts for anonymity and security. It has apps for iOS and Android plus browser extensions for Chrome, Firefox and Opera. The only downside is that you have to go to their site to check your dummy inbox.
Agustin Flowalistik made a fully 3D-printed letter board that looks nearly as clean and solid as one made from off-the-shelf materials. He’s sharing his 3D models for free. The set includes four different board sizes; subscribe to his Patreon and you’ll get access to the source files.