The Oshikatsu Stack
Japan turned organized fandom into a $24.6 billion structured economy. Western fans spend just as hard with zero infrastructure to show for it.
Weekend Project
Fast-start ideas that can be built in days, not months. Lightweight tools, digital products, or services perfect for testing markets with minimal cost or risk. Ideal for solopreneurs and early builders exploring traction and learning through doing.
The Warby Parker of Hobby Kits
Young adults are ditching screens for slow hobbies — and the $74B craft market has no modern brand capturing them through ritual and membership.
"Digital Nomad" Concierge for Boomers
Mid-term rental infrastructure exploded but nobody built the concierge layer for affluent 60-plus remote professionals willing to pay premium for continuity
Couch-to-5K for Cash: Build the Side Hustle OS
The median side hustler earns $200 a month. The average earns $885. That execution gap is a SaaS product waiting to be built.
The Pickleball Pied Piper
Senior living operators spend $431 per lead with 30% conversion rates while 19.8 million pickleball players organize their retirement around court access.
Incident OS For Hotels
Panic button mandates are spreading fast but every vendor stops at the alert. The post-incident execution layer is wide open.
Calm for Quitters
Habit apps punish failure. A maintenance-first protocol targeting burnout, ADHD, and low-energy weeks could own the gap Calm proved exists.
The Directory Empire Play
G2 is consolidating the entire B2B review ecosystem into one platform. That leaves every niche category wide open for a new decision layer.
Stripe for AI Agents
Coinbase and Google shipped agent payment rails. Nobody built the governance layer that makes CFOs approve production deployment.
Boredom Coach for Kids
83% of parents say screens are worsening kids' mental health yet half rely on them daily—nobody sells the enforcement protocol for when willpower fails.
Pixar Booth Economics: Camp Programming Built on Commodity AI Animation
Meta validated sketch-to-animation. Apps shipped it to consumers. Nobody built the compliant, repeatable event format that camps and museums actually purchase.
GitHub OAuth + Printful = Your Print Shop
When everyone can generate images, nobody frames them. Developers pay $23-$249 for prints of GitHub commits. The category exists, nobody owns it.
OpenTable For Mahjong Nights
Gen Z's mahjong revival created a $500K+ infrastructure gap. The wedge isn't gameplay—it's owning the host graph before Eventbrite catches on.
Life Alert for Millennials
A Chinese app proved millions will pay for daily proof-of-life. The U.S. market is 40 million households and wide open.
Night City IRL: The Platform Layer for $145B Game Travel
Game-inspired tours are already running in Tokyo and Paris. The missing piece: a brand that owns the category and packages supply into structured routes.
The Transformation Content Arbitrage
Blue-collar services are underpriced as content. Operators trading labor for filming rights are building distribution others can't match.
Co-Star's Playbook for Founders
How "decision hygiene" became a $3B category — and why timing tools are the next founder productivity unlock
The Shopify Moment for AI Labor: Owning Worklines on MuleRun
MuleRun hit 600K users offering promotional economics to fill their marketplace. Workline owners capture value; single-agent builders get commoditized.
Review Gardening Agents: Build the Revenue Layer for Google Business Profile
Turn every Google review into repeat visits. Shops hit 90% response rates and capture 10-30 VIP contacts monthly from reviews alone.
The Amazon Launch Manager Play
Book launch services jumped from $5K to $50K+. Nobody owns the middle market turning founder manuscripts into qualified leads.
The Black Book: Build a Private Intel Network for the Anti-Viral Economy
TikTok made gatekeeping valuable again. Build a paid trust network for recommendations that never go viral—and charge venues for access.
The Living Room Franchise
Silent reading events surged 223% while commercial real estate bleeds off-peak. The format scales, the membership model is missing.
The Missing macOS Layer for Dasung's $2,000 E-Ink Monitors
E-ink monitor displaying crisp text, macOS menu bar, eye strain relief icon, Dasung company logo, VS Code editor interface
Offline Ritual Kits (aka the House Phone Comeback)
A Stanford grad's $280K handset launch proved people pay for phone boundaries—but the durable business is owning offline ritual formats, not selling another cute gadget.