There was a near total eclipse a few years ago in May and we were at the GC, NP for a meeting. We were all given glasses and retangles of viewing film by the Assoc. for safe viewing. A young couple had their 6 to 8 year old kids there and the DOD(Dear Old Dad) took a cardboard box open on the top and made holes in one end. The shadow box worked great and they had selected the initial of the family name for an arrangement of holes. It was cool and got the kids interested. Folks can be so resourceful and entertaining with their kids. Using the shadow effect kept the kids backs to the sun.