Paint it white so when they show up with frost spells you can just chuckle.

Remember, if you see someone buying more dice than they can ever hope to use, no you didn’t

The intro to the big bad is a red dragon fleeing in terror straight past the PCs. Extra kudos if the big bad is just a normal sized goblin. (I’m thinking star wars prequel Yoda)

The mind flayers work in mysterious ways…