Why tweet with your phone or keyboard when you can tweet like the old days using morse code. That’s right, you can use a telegraph machine. joester5 on Twitter managed to create just that. A telegraph machine for Twitter, using a telegraph machine he bought on eBay.
It took some open source software, a twitter account, an arduino micro-controller, and a telegraph machine. You’ll have to learn Morse code however. At least you won’t have to go to the telegraph office to pick up tweets from this guy.