I think they are called "wild cards"
Prepare cards with the name of the airway/NAVaid/whatever on one side and details on the other. Shuffle the cards and try to tell whats on the other side of the card. Easier with two people. (helps both ways as you get to identify the airway from route points or get to name the route points from the name)
Get a map with the points and airways drawn but no names. Pick a card and try to point it out on the map.
helped me, hope it helps you.
regards