I'm always eager to try new things, and here below - (taken from an article published in news.com.au: CLICK HERE for the story) - you'll find a list of 'work on the go' sites that may just suit you! (Just click on each name and the site will open on a new webpage!)
A large variety of job offers here
Teaching your language - similarly to having a conversation over Skype and helping with grammar and pronunciation)
Similar to Cambly, above.
Once you've signed up with Clickworker, you'll be directed to do an assessment at UHRS.
UHRS (You'll be able to log in there via Clickworker! The two sites are partners)
You get filmed answering about seven questions at a time and the pay is good!
Both the above site and Usability Hub below, require the page open so that when a test comes in, one is ready. Of course, you'll have to register first! LOL!