If you have a custom TiddlyWiki setup that you maintain and would like to share with others via Tiddlyhost, please see these new docs about how to do it.
And if you want to see the currently available editions, browse the templates list here. As you can see there’s not much there yet since this a brand new feature, but I’m hoping that will change over time.
Ps, thanks everyone for the feedback on the previous post about cloning support. This new templates feature came from the “what about cloning other people’s sites” discussion there.