RECOMMENDATIONS - Are there any LEGIT & PROFITABLE home internet businesses with

NO start up costs? My wife stays at home because of legal citizenship issues. She is very intelligent with a Masters in Marketing. She is going "crazy" staying at home and not making money b/c we have to wait approx. 1 year for legal papers to be processed. She speaks Polish fluently and is more that acceptable at English. Please advise me if any of you have had positive experiences with online businesses that require little to no start up cash, are interesting and legit. Even possibly offer a challenge. No pyramid schemes. No establishing customer bases. Simply, provide a service and receive compensation. Thank you in advance for your input.