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Backstop
Scrabble
These look great. I'm at my in-laws at the moment and the clear skies have got Grandpa teaching the kids about all this using his slightly more lo-fi setup. I give you - The Sunspot ViewTracker 2000.
It utilises an old set of binoculars of unknown magnification, some scrap wood, a cardboard tube and 87 years of scientific knowledge and experiments. The sun is focused down one side of the binos, through a pinhole in some metal sheet, down through the cardboard tube and onto a piece of paper at the end.
Approximate aim is achieved with the sight markings at the binocular end, and the binoculars focused until a crisp image is projected on the paper.
Zoom/enhance:
Think we need to set up it on consecutive days, trace the spots and get a flip book going!