Here's a nice little idea from U.K.-based digital artist Brendan Dawes. It's called the Happiness Machines and it's a device that searches the Internet for mentions of the word "happy" and then prints out those thoughts randomly at the touch of a button.
Some of the thoughts come from Jonathan Harris's crowd-sourced website We Feel Fine. Since August 2005, this site has been combing blog posts for the phrases "I feel" and "I am feeling." When it finds such a phrase, it records the full sentence up to the period, and identifies the feeling expressed in that sentence, whether it be sad, happy, depressed, etc.
Now, it's possible that someone will mention the word "happy" in a thought that's not entirely positive. But since the phrases are randomly generated and printed on actual paper, the sentiments are explicitly human.
Dawes presentd his machine at the London Design Festival 2012.
Credit: Brendan Dawes