Check Home Depot or Lowes or any building supply, lumber yard, or such. It is called foam board or foam insluation board or blue board (there is also pink, it works too) and it is sold stacked up next to the dry wall. Most theater groups use this no…
I would guess that just large pieces of styrofoam would work - I don't know prices, but my hubby is insulating the barn with them and you can buy them in 4x8 sheets at our Menards store. Maybe that would work.
Can you tell us how you "hinge" the panels together? Is it a permanent hinge like screws or temporary and dismantled after VBS? This is a great idea as you can use it year after year. We purchase a canvas paint drop cloth. We then paint it and screw…
Love the idea of using square boxes. Paint each side with a different character or bible memory verse, etc and then rotate daily and ask kids to find what's different!