Of the three aspects of home maintenance that are most common¹: plumbing, electrical and carpentry, I feel most comfortable with plumbing. It seems nicely discrete in that you’re generally putting together existing components without having to do much if any measuring and cutting. That said, I’m moving into a new house where I’ve got a handful of carpentry projects that will definitely stretch my abilities in that arena.

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1. In my experience, I suppose, one could perhaps add concrete/masonry and may be something with dirt?