When passers-by see you playing and stop to watch, or ask “What is that?”, it is helpful if you have a handout that you can give them. A handout is a great ice-breaker to start a conversation, and (who knows!) it may help you recruit a new club member.
The best handout is a single sheet of paper. One side should provide a short introduction to the game, information about your local petanque club, and a list of online resources. The flip side can be blank, or contain whatever you want— a short description of the game, answers to frequently-asked questions, etc. The handouts page of the Tucson Petanque Club has a handout that you can download and customize to your own needs.
Here are some general-purpose handouts that you may find interesting.