I had no link in my previous post and only just noticed
A novelty account is one made for a specific purpose/type of comment. For instance, badwatercolor makes bad watercolor. Their usernames are exactly what they are.
A novelty subreddit is easier to define as what it's not. It's not for 'useful/objective topics' like [!firstname.lastname@example.org](https://lemmy.perthchat.org/c/worldnews) or science. A great example would be this sub or like [Ask ouija](https://lemmy.perthchat.org/c/ouija). Less good examples are ask lemmy.
Can also feature novelty instances, but none exist at the moment nor are forecasted to existed.
When you find a novelty account/sub that is not specifically troll/spam related, share it here. The sub should be newish or have some sign of life.