Hey Mobeets, Zimo (author/builder) here.

The text on the flowerpot and the wooden box was “printed” with toner transfer method. It’s a super simple process: you print the text flipped with a laser printer and use toner transfer solution and rub the text on the surface.

I used this solution for it (hope it’s fine to share it): https://ideahobby.eu/product/10556/express-transfer-20ml-p32...

Here’s a video how it’s used: https://youtu.be/tsc7cHJ98pQ?si=cZ0b0W0ajJjQE1gf