Milliways creates so called "challenge coins" for every event we make an appearance at. Coins are a nice piece of memorabilia to remember the past events by. Each coin features a unique design related to the theme of the particular event. The other side of the coin usually features the Milliways logo. Usually there exist multiple coin designs for a particular event.
If you would like to get a Milliways coin visit us at an event and ask! We may also have leftover coins from past events so you still have a chance to get those as well.