I've been sharpening my axe by working on a few different projects in the shape of of an online shop[0][1]. Products are a bit of a mishmash as a result of the different projects - To date, I've been farming succulents, 3d modeling/printing (flower pots/hobby crafts/etc), and learning Rust/Next.js for the back/front ends!
Time investment has been _massive_ so far, but I just hit the first $100+ profit month, and despite the distance from my normal dev salary, the positive reviews/feedback have been an incredible reward that drives the motivation to continue. I will also say that it is quite the humbling experience to ship physical products and the experience has given me a whole new appreciation for the things we have in this world.
Early days, but check it out :)
[0] - https://freedomfrenchie.com [1] - https://www.etsy.com/shop/FreedomFrenchie