Overlooked Features?

Hey OL Techs and support folks! I’m wondering, what are the features you think are most overlooked or under-utilized? Things the userbase might have missed as Designer evolved from search-and-replace to CSS selectors to Handlebars? Should more of us be using snippets? I think I’ve only used Snippets once, to make an external HTML “contact info” page shared across multiple templates. What are other use cases?