I like experimenting with the Unearthed Arcana content that Wizards of the Coast likes to put out and decided to have my solo character, Kaim, go through some of those variants. Here is a link to the WotC page that posted it if you want to take a look: https://dnd.wizards.com/articles/unearthed-arcana/class-feature-variants.
Cunning Action: Aim 2nd-level rogue feature (enhances Cunning Action) You gain an additional way to use your Cunning Action: carefully aiming your next attack. As a bonus action, you give yourself advantage on your next attack roll on the current turn. You can use this bonus action only if you haven’t moved during this turn, and after you use the bonus action, your speed is 0 until the end of the current turn.