Got your tinkers hat ready? Then here is something to play around with.
" ... The new Firefox add-on Priv8 adds sandboxed tabs to the web browser using the security model of Firefox OS. It enables you to run select tabs in a sandbox which separates it and its data from the rest of the browser and other tabs. Please note that it has been released as a proof of concept right now. ... "Source: gHacks Tech News
Review Priv8 adds sandboxed tabs to Firefox