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- New business ideas: $3K in 45 days selling "tiny AI tools" anyone can build, an extra $5K/mo flipping vintage tees, he cold-texted US dentists from India ($297/mo) 🤑
New business ideas: $3K in 45 days selling "tiny AI tools" anyone can build, an extra $5K/mo flipping vintage tees, he cold-texted US dentists from India ($297/mo) 🤑
$500 to start. Now $5K/mo on top of his job.
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eBiz Insider
Business Ideas Newsletter
Hey, it's Niall 👋
A fresh batch of business ideas for you today.
→ A redditor who turned a $500 stake into an extra $5K/month
→ Someone in India cold-texting US dentists into paying clients
→ A guy who made $3K in 45 days from AI tools anyone could build 🤖
If that's got you thinking... 200+ more ways to make money with AI 👇
Niall Doherty
eBiz Insider
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REMOTE AGENCY
$297/Month From a US Dental Clinic (Pitched From India)
📝 A guy in India landed his first marketing client – a US dental clinic paying $297/month – without leaving his desk.
He recently shared his playbook…
Geography stopped mattering the moment Zoom became normal. People do business with people. Talk like one. Show you understand how they make money. Solve that specific leak.
Why dentists? High-ticket work, no time to learn ads, and one Invisalign case covers his fee for a year 👀
His early calls flopped because he led with jargon – "review funnels," "workflow automation."
So he cut it down to one promise: more high-value appointments from Google.
The cold text that started working 👇
Hi [Dr name], I help dentists in [city] book 5–10 extra high-value appointments a month from Google (Invisalign, implants, cosmetic). [Competitor clinic] is showing up first for "Invisalign [city]" and "dental implants [city]" right now, so they're getting calls that could be yours. I charge $297/m. One case covers it many times over. First month's free so you can see it work before you pay anything.
He sends 10 a day by hand, with two follow-ups...
Most of my replies came from the second follow up. Dentists aren't ignoring you, they're mid-root canal.
Same script fits any boring high-ticket niche – med spas, chiropractors, roofers 😎
FLIPPING
An Extra $5K/Month Flipping Vintage Band Tees and Boardshorts
📝 jazz_king_seb writes about his side hustle…
I flip vintage and secondhand band t-shirts and boardshorts. Mostly sourcing from wholesalers in Asia then resell them on eBay and Depop.
Last month I cleared just over $5K on top of my regular income.
All from a $500 starting stake that he reinvested every month 💪
The margins are the fun part 👇
Buy for $3–15, sell for $40–120 depending on the piece.
It's not complicated. It's just about developing an eye for what moves and pricing with confidence.
The boardshorts are the real winners – Y2K surfwear from collectors in Bangkok, Seoul, and Japan 👀
To find suppliers, he uses Fleek, a wholesale marketplace for vintage clothing, plus the odd sourcing trip.
The slow part is earning trust…
Building a Depop following and getting eBay feedback to a point where buyers trust you takes a few months of consistent listing, good photos, and fair pricing.
Pick a niche you actually know – band tees, surfwear, workwear, denim – and you'll spot the winners faster 😎
TOGETHER WITH JINNIFY
You're 30 Minutes From Your First Online Sale
Everyone says selling on Amazon or TikTok Shop takes months to learn. Product listings, pricing, PPC, inventory... it's a full-time job before you make a single dollar.
Jinnify skips that part. It's an AI operator that runs the store work for you:
Writes and optimizes your listings, so buyers actually find them
Sets prices and adjusts them as the market moves
Manages ads and inventory 24/7, without you watching a dashboard
Flags anything that needs a human, everything else it just handles
Starting from zero? Jinnify walks you from empty store to first sale. Already selling? It finds what's broken and fixes it, usually in the first scan.
No agency fees, no pile of point tools, no VA to manage. Just connect and let the genie do the grind 🧞
👆🤑
AI SIDE HUSTLE
$3K in 45 Days Selling "Tiny AI Tools" Anyone Could Build
Forget building an entire app. The fresh play is selling a "tiny AI tool" – a Claude Skill, basically: a recipe that makes the AI do one task your way, every time.
Marketing consultant Ryan Doser packaged ~25 of his own into a $99 bundle, sold it from his site, and cleared over $3,000 in about 45 days – basically all profit 🤑
No paid ads. What stuck with me, from Chris Koerner's writeup…
…he didn't build anything new… He just took what he was already doing every day and turned it into a product.
Ryan's a marketer with an email list, so that part's not the magic.
The magic is who else could pull this off 👀
Chris reckons it's wide open, and Ryan rattles off a few people who'd have something to sell 👇
A baseball-card trader could build a tool that reads photos and flags resale value
A gardener could build one that turns your location into a planting plan
A youth soccer coach could build one that spits out custom practice drills
A nurse could build one that catches medical-billing errors
These are off the top of his head – just to show how wide open it is. You'd be packaging hard-won experience so the AI gives expert answers, not generic ones 🧐
And building one is almost too easy. Open the Claude app, talk through everything you know about a task, and have it write the Skill up for you.
Ask yourself what you know that takes others years to figure out, then start there. Starting out, price a single tool at $19–29 and a bundle of three to five at $49–79 – then grow from there 😎
TOGETHER WITH FIN
Making AI work day to day is becoming its own job. Hear from three people doing it, on demand. Watch now
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