This simple extension allows randomizing things! I use it for randomizing stand-up meeting orders.
After installing, go to the settings page of the plugin and add people there. The members should be specified in the textarea so that there is one name per line. For example:
Pranash
Jessica
Sam
Makisu
Then the extension icon can be clicked in the toolbar and the randomizer will start.
Use web-ext to develop the extension locally:
web-ext runweb-ext build