Brendan Dawes made this Happiness Machine for The London Design Festival:

The Happiness Machine is an Internet connected printer that prints random happy thoughts by random people from across the web; press the big black button and the Happiness Machine prints a thought from someone who mentioned the word happy.

Though The Happiness Machine uses content from We Feel Fine, the printer is completely agnostic to the data it prints; the logic is all done on the server so I can easily change what type of data comes back. It could easily be train times, news headlines or your day’s appointments – the printer doesn’t care – it’s dumb. It just prints what comes back.

More photos on Brendan’s Flickr.

Adafruit IoT Printer Project Pack Internet of Things printer. Build an Internet of Things connected mini printer that will do your bidding! This is a fun weekend project that comes with a beautiful laser cut case. Once assembled, the little printer connects to Ethernet to get Internet data for printing onto 2 1/4 wide receipt paper. The example sketch weve written will connect to Twitters search API and retrieve and print tweets according to your requests: you can have it print out tweets from a person, a hashtag, mentioning a word, etc! Once youve gotten that working, you can of course easily adapt our sketch to customize the printer.

The project is not very difficult but does require some light soldering, so youll want to have a little experience with a soldering iron. Youll also need a small flathead screwdriver to assemble the box. Its also best if youve had a little Arduino experience so you can feel comfortable downloading the IDE and uploading our example sketch.

Contains:

• Mini Receipt Printer. BPA-Free
• 50 foot long receipt paper
• 5V 2A power adapter
• 2.1mm Panel Jack
• Waterproof metal On/Off button
• Extra long header piece
• Ribbon cable
• 1/8 heat shrink
• Laser cut enclosure + hardware

This pack does not contain an Arduino+Arduino Ethernet Shield, Arduino Ethernet or Ethernet cable To complete the project you will need to add either an Arduino + Ethernet Shield or an Arduino UNO Ethernet. If youre using an Arduino UNO Ethernet you will also need an FTDI friend or FTDI cable to upload the sketch. A plain straight-thru Ethernet cable is also required (any length)

Before purchasing, please check out the full tutorial with images, code, etc!