score:7
There are a variety of games that can be played by passing pieces of paper around, which you could do quietly and discretely. A quick search for "pencil and paper games" or "paper passing games" indicates some that work with more than two players (or pair up and have a few games going at once). Some are more strictly "games" with an element of strategy, while others are entertaining activities with no particular winner. Some examples:
Some other ideas are listed on papg.com and this Reddit thread.
Upvote:0
Inspired by this question, I would suggest a physical alternative, like who can do the most pushups or who can hold the plank position for the longest time.
Upvote:6