If you are looking for a fun relay race or table game, with minimal props, that appears real simple but requires some strategy, then a Domino Race might be the right activity.
Tables or floor, dominos, paper or tape (optional).
Fun tournaments, games nights, rainy day activities etc.
Domino Race Instructions:
Participants push on the face or back of a domino standing tall on end with one finger without knocking it over or disconnecting from it. If the domino falls, the player starts over again. On a table, a racetrack can be drawn by pencil or made with tape. Feel free to try a relay race, simple straight-line race, or obstacle course with loop-the-loops or mazes.
Source: Sam Sikes