Do you have 5-10 seconds to spare? Google would like you to spend that time getting something done in its new Crowdsource app. You can apply your human sensibilities to translation and text transcription, and in return you get a sense of satisfaction. Yep, that's it.
The tasks available in Crowdsource depend on the language or languages you are fluent in. If you only speak one, you can help with image transcription and handwriting recognition. You'll get an image so you can type out what it says. Most of the images are street signs and the handwriting samples are meaningless chicken scratches. Seriously, it is the worst handwriting. Those who speak two or more languages will be able to create and verify translations for text and Maps data.
Perhaps I've just been spoiled by Opinion Rewards, but I kind of expected Crowdsource to offer a pittance for completing these tasks. Although, I suppose this app could technically benefit users, whereas the surveys are just market research. You can get the app from Google Play or from APK Mirror.