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- New business ideas: $120K/mo mailing cakes to strangers, $72K side hustle he hides from friends, $23K selling people's complaints (age 15) 🤑
New business ideas: $120K/mo mailing cakes to strangers, $72K side hustle he hides from friends, $23K selling people's complaints (age 15) 🤑
$72K side hustle he hides from friends.
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Business Ideas Newsletter
Hey, it's Niall 👋
A fresh batch of business ideas for you today.
→ Something called "cold caking" – the numbers are wild (no baking required)
→ A 15-year-old who sells people's complaints for a living
→ A secret side hustle he's too embarrassed to tell anyone about
Alright, let's dive into the latest batch.
Starting with... this free playbook ($0 to $90K/month in 90 days) 👇
Niall Doherty
eBiz Insider
TOGETHER WITH ZAINITH AGENCY
Free TikTok Shop Starter Guide
For a limited time, get our TikTok Shop starter resource folder, including a case study showing how we scaled from $0 to $90K/month in 90 days.
You’ll also get our creator approval guide plus a sample P&L to better understand channel profitability.
👆🤑
AI SIDE HUSTLE
15-Year-Old Has Earned $23K+ From His Complaints Database
Om Patel launched BigIdeasDB in late 2024, aged 14, after eight flops in a row.
It's a database of real problems people are complaining about online – the kind founders can build a business on.
Now he's 15 and it's past $23,000 in lifetime revenue. Best month: $4,600 🤑
Om's scrapers pull from Reddit, G2 reviews, app stores, and Upwork job posts. AI clusters the whining into ~10,000 validated problems.
The pitch...
Stop building products based on what you think is cool and start looking for problems people are actively complaining about.
Om knows that pain firsthand 👇
I kept solving problems nobody cared about. I'd build for months… then launch to silence.
Now 160+ founders pay him $45/month for access. No free trial, no ads, no funding – all growth came from daily build-in-public posts on X and Reddit.
Run Om's playbook in a tighter niche – Shopify 1-star reviews, fitness app gripes, dental forum rants – and sell the filtered list to founders in that space 😎
WEIRD MIDDLEMAN
$4K/Day From "Cold Caking" Sales Prospects
William Lindholm sends physical cakes to his clients' sales prospects to break the ice.
He calls it "cold caking" – $80 a cake, sourced from a local bakery near each recipient, with tracking on top.
📝 The numbers are wild…
So, this month we're doing $120,000. Yeah, it's crazy. Our company has only existed for 6 months.
🤑 That's about $4K a day in revenue, $30-40K monthly profit.
His pitch: as AI drowns out every digital channel, physical gifts cut through.
From the cakes we've sent out so far, 35% have converted into meetings, which is really just crazy.
Next week he's shipping a thousand cakes for a single dental software company 👀
The moat is an AI agent that sources new bakeries and negotiates volume discounts, taking him from one bakery to fifteen in a month.
He's also still passively earning $12K/month from his original Norway business (HR birthday cakes), with his mom handling customer service 😅
Inbounds are stacking up from places like Canada, Spain, and Australia – William says he'd happily partner up if you want to run cold-caking in your area 🍰
TOGETHER WITH SURETHING
One agent, one brain, zero manual work.
Most AI tools forget you the moment the chat ends. SureThing doesn’t.
SureThing is an autonomous agent that can draft in your voice, triage what matters, follow up on things you forgot, and report back with what happened next.
Day 1, you onboard it.
Day 30, it knows your clients and patterns.
Day 90, it catches things you missed.
👆🤖
BORING BUSINESS
His Secret Side Hustle Earned $72K in 9 Months
📝 Recently shared on Reddit…
I'm 26 and make ~$85k + 5% bonus at my day job. My business did ~$72k last year, working from March to November all by myself part-time, so nights and weekends only.
The day job is a finance role at an insurance company. The "business" is one-man mobile detailing, run from a custom trailer plus a new Ford Transit Connect setup wrapped with the logo.
Best month: $12K solo.
🤑 Average ticket: $285 incl. tips.
Pricing 👇
Exterior only: $100–150
Interior only: $250–275
Interior + exterior: $325–375
Monthly maintenance plan: $275
That last one is the kicker – he's stacked enough monthly contracts for a guaranteed $5K/month without chasing new jobs. Booked out 1.5+ months. Clientele skews G-Wagons, Porsches, the occasional Ferrari.
The twist? He's embarrassed about it…
The business does too well to ignore, but it feels so beneath me to tell people what I do. Very few friends and even family members know because I try to keep it as secret as possible.
Net worth at 26: ~$400K. Plus 2 duplex rentals.
A boring offline hedge against AI eating finance jobs is looking pretty smart right about now 😎
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