As someone coming on 30 months of retirement, I'm consciously shifting away from toy projects to projects where I commit to a more polished deliverable.

It helps with commitment and pursuing a deeper learning of the activity instead of doing quick and dirty stuff in my experience. Just don't expect it (or aim for it) to be a steam top-seller, my aim is usually to have at least one other stranger get some amount of value out of what I produce.

Not to say there isn't a place for quick and dirty projects, of course. Bespoke 3D models to fix things around the house are my current favourite category for that.