Versa Slate Paperless, Erasable Braille Slate & Stylus
[Versa]

This gizmo combines two of my favorite things -- slates and refreshable braille. It feels a bit different than writing with a slate on braille paper, but I got used to the difference rather quickly and the resulting braille is fantastic. I love using this for quick phone numbers or notes that I know I'm not going to keep. The documentation is a little sketchy, but you'll figure it out in a minute or two regardless. There's nothing else quite like the Versa Slate.