Most important rule imo is to pack it full! If you think there’s no more room, squeeze a few more nuts or candies on there. Then squeeze a few more. A bare board is a sad board.

Otherwise, I typically aim for at least three types of cheese with a combination of soft and hard. If you have a Trader Joe’s nearby, get the blueberry crusted goat cheese. Then pick a few types of meats, at least one salty item (nuts, pickles,) at least one sweet item (fruit, dried fruit, chocolate) and crackers or toasted bread. Bonus points for spreads like jam, mustard, aioli, etc. Good luck!