Consultant, as helping business with cybersecurity problems is especially useful. 
Youtube 
Bug bounty programs 
Ethical hacking services 
Red Teamer 
Secure websites for clients, making sure the websites are secure from common vulnerabilities. 
Expounding on security safety 
Create your startup, as in creating your own cybersecurity company 
Unite and gather reports and attacks from many companies to help improve and prevent attacks that have happened. 
Researching vulnerabilities before attackers do  
Incident response services offering help to companies respond to incidents 
Tester for penetrations, as doing attacks on digital components of a company 
Yacht GPS software that is secure