All Side Hustle Ideas
Physical products

Software error-message T-shirt designs

Put cartoon T-shirt designs about software error messages on craft sites.

At a glance
Estimated by a classifier that read the source. The bar shows how sure it was.
Category
Physical products
85% sure
x
Earns from
One-time sales
75% sure
x
Startup cost (estimate)
Under $100
60% sure
x
Time it takes (estimate)
Hands-off
70% sure
x
Where
Online
94% sure
x
Coding
No coding needed
93% sure
x
Source
Hacker NewsComment by indymike in “Ask HN: Those with money-making side projects,how did you come up with the idea?”, December 11, 2022

  • Physical products
    A diaper bag brand designed to look less bulky than traditional bags, manufactured through Alibaba. Preorders and organic TikTok content helped fund inventory.
    Over $10kOnline
    Side Hustle Nation, 2026
  • Physical products
    A home micro bakery selling sourdough, cinnamon rolls, cookies and bagels from a front porch on Saturday mornings. Customers preorder and items sell out to lines of local buyers.
    $100 to $1k
    The Koerner Office, 2026
  • Physical products
    An online store dropshipping high-ticket camper van and motorhome accessories in the UK, with the niche chosen from search and competitor data. Sales come through Google Shopping ads as an authorized reseller.
    Online
    Side Hustle Nation, 2026
  • Physical products
    Buying poorly listed couches, negotiating the price down and reselling them with better photos, including AI-generated backgrounds. The operator is a teenager working in spare time.
    Online and in person
    The Koerner Office, 2026
  • Physical products
    Growing gourmet and medicinal mushrooms such as oyster, lion's mane and reishi, starting in a very small space. It grew into a farm operation alongside a growing club.
    $100 to $1k
    Side Hustle Nation, 2026
  • Physical products
    Sold pesticide-free produce foraged from leased land and roadsides at farmers markets.
    In person
    Hacker News, 2026