I think it's 100% possible. The success and time to market will anyways depend on you as an entrepreneur. Several years ago I've found Peter Levels on twitter. He is an indie maker. He wrote a nice book that can help you with motivation to start. Here is the link: https://makebook.io/. Source: over 2 years ago

Not affiliated but you might want to check out levelio's book makebook. It has good coverage of most basic stuff, useful for engineers like me who aren't that adept in sales and marketing. [1] https://makebook.io/. - Source: Hacker News / almost 3 years ago

I found this site - https://sidehustlestack.co/ - and maybe there is something in there that could help your girlfriend? Good luck! Source: over 1 year ago

There is a website called side hustle stack- you should check it out Side Hustle Stack. Source: over 1 year ago

Startup Stash • Tools and resources for entrepreneurs Integrations Directory • Directory of integrations for your no-code product. One Page Love • Find inspiration from one-page websites Do Things That Don’t Scale • Collection of unscalable startup hacks NoCodeList • Software for your projects Page Flows • User design flow inspiration Stackshare • Find software for your projects and business Side Hustle... Source: over 1 year ago

You can find plenty of ideas here: https://sidehustlestack.co/. Source: over 1 year ago

Https://sidehustlestack.co/ good website to help out with ideas. Source: about 2 years ago