Any skill is a good skill if you can sell it.

I recently attended a seminar on the future of work. Much of it was complete nonsense and blue-sky dreaming (as usual), but one thing that stuck to my mind was that traditional and local employer-employee relationships are likely to lose significance. Brief freelancing work will gain in importance.

If you have any marketable skills, the net allows you to sell them globally as a freelancer. A site like FiveRR is a good example. For instance, people who've got a nice voice and presence offer services like narrating your video from a script for you for something like $20. If you want to make an impact and sound like Darth Vader yourself, you can choose between a robovoice (horrible) or paying for a voice.

I don't see why this couldn't include making and shipping products in addition to services.

I have many skills in science and engineering, and I've been selling them on that site. An individual gig doesn't pay me much ($50-$500), but if I am active, they build up to nice additional income.