Boring Candy

Flamethrowers

Musk announced in December that his Boring transportation company would start selling flamethrowers. The Boring-branded gadgets were an encore to the company's signature hats — and a little closer to blow torches.

The company sold 20,000 units — or $10 million worth — in just five days.

100 days to build the world's biggest battery

Underground Hyperloop

Reusable rockets

Musk founded SpaceX to establish a human colony on Mars but along the way he set a company goal to reduce the cost and time it takes to reach space. The company has achieved a myriad of milestones since its founding but reuse was only realized in the last few years. In December 2015, SpaceX took a first massive step towards reusability when it became the first company to land part of an orbital rocket. Just over a year later, SpaceX took another giant step, by launching and landing a Falcon 9 rocket it launched and landed once before.