Nothing stopping you! I have git and printables etc accounts full of stuff I've designed and shared, but some folks might just want the finished thing so awhil

Nothing stopping you! I have git and printables etc accounts full of stuff I've designed and shared, but some folks might just want the finished thing so awhile back I hung out my hat and started a small shop selling the widgets I design and share for free. Turns out a lot of people just want the thing, I can give the plans away and still make some extra on the side by making a few to sell. I'm incredibly far away from being able to quit my job over this, but it has turned a few of my hobbies into slightly net-profitable ventures instead of money holes and the result is a well appointed shop to spend my free time playing around with new ideas. My advice: give it a shot. There's nearly zero up front cost and if nothing else, you'll probably learn a bit.