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1. Building Niche Tools
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Create small tools that solve personal problems — a daily habit tracker, a markdown editor, or a CSS generator. I once made a wallpaper-sharing platform called FreezyStock just to organize design assets — it slowly turned into a useful resource for creators (and even lets contributors earn from premium content now).
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2. Technical Blogging
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Writing about bugs you solved, tools you love, or project walkthroughs can drive traffic and passive income (via dev platforms or Medium Partner Program). Bonus: it builds your brand.
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3. Microservices for Freelancers
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Offering one-time freelance scripts, automation bots, or API integrations on platforms like Gumroad or GitHub Sponsors can scale better than hourly gigs.
Not every hustle needs to go viral — just start small, stay consistent, and solve real problems.