D6 DM inspiration

Inspiration (The DM awarded kind, not Scanlan’s Bardic Inspiration) acts as a +1d6 they can add to a roll. (RAW = the player gains advantage, PHB page 125)

Inspiration is an resource that the DM can give out as a reward for particularly insightful roleplaying, clever moves, or anything the players do to please their benevolent puppetmaster. Normally it can be used to give advantage on a single roll, which can be useful in many situations. However, lots of things can give advantage: certain conditions, class abilities, favorable conditions. This means that the advantage given by inspiration may feel less special. In addition, advantage cannot stack, meaning players cannot use inspiration in a situation where they already have advantage.

Matt Mercer includes a homebrew rule that inspiration adds 1d6 to a roll. This not only makes it a little more special, it also can stack with advantage, in case a player has a roll that they really need to succeed on.