There are very good actual Nintendo Switch cases on the market, but sometimes the best solution to moving your console around can come from unofficial avenues.
In this case, a Pelican... case, the rugged storage boxes that everyone from photographers to tradespeople use to keep their gear safe from bears, bombs and bus crashes.
Kamikawa4 works for a company that produces custom foam inserts for the cases, and managed to convince his bosses to craft some specifically designed to fit a Switch and its accessories (they make them on a per-order basis).
At $US70 ($92) it isn't cheap, but that's for the case and the insert, so if you ever feel like your console might be in mortal danger while in transit -- or just want to look like an action movie star opening the thing up when you get there -- it isn't the worst idea. Unfortunately it doesn't ship to Australia, so you'll have to shell out for a mail forwarding service, too.