Hi Tara, I find that boys like pet rocks. Find some rocks, paint them or use markers, add some googly eyes and hair with yarn. The create a scene. The scene can be a stage for a rock band or Sherwood Forest for Robin Hood. Use construction paper and markers to create props like guitars, bows and arrows, etc.

Another thing they like to do is Art in Nature. Take the boys out to an area that has leaves, rocks, twigs, etc. and give them 10 minutes to create a work of art. You can team them up with another boy or let them go solo. You'll be amazed at what they come up with. Then let them explain and show off their masterpiece to the rest of the group. Take pictures of the artwork to show future groups.