Kairo

All 14 side hustles

Digital and printable products

Notebooks, planners, puzzles and activity books generated with AI and checked by hand, sold on Amazon KDP or Etsy: passive income after the initial setup.

Who pays for it: Buyers of planners, notebooks and activity books on Amazon KDP and Etsy.

To get started
€0 to €100
First client (estimate)
about 60 days
Difficulty
2 out of 5
Time needed
from 5 hours a week
Computer
Normal laptop or desktop, no dedicated graphics card
Demand and competition
medium demand, high competition
How reliable is the data
Verified

What to watch out for

Median earnings per title are low, so it takes volume. Amazon KDP also requires you to declare AI-generated content.

A way to start this week

  1. Pick one narrow audience with a clear need (for example, a planner for one hobby).
  2. Make one complete product, check every page by hand and declare AI use where the platform requires it.
  3. Publish it, then measure what sells before you make a second one.

Questions

How much does it cost to start?

Kairo's estimate is €0 to €100 upfront, with no monthly tool costs.

How long until the first client?

The estimate is about 60 days. It depends on how much outreach you do, and it is not a promise.

Do I need a powerful computer?

No. A normal laptop or desktop, no dedicated graphics card is enough.

See how well it fits me