Deploying builds to Steam Deck

I'm working on a couple of tiny personal projects at the moment. The handiest way to play them is of course on the Steam Deck, but getting builds onto it without setting up a Steam store product has been a little impenetrable, until now.

After following a helpful guide on installing Itch.io on the Steam Deck, I've been able to use a handy little Unity Package to deploy directly to Itch.io from the editor – which now lets me play those builds on the deck, complete with auto-updating.