2010 Yellowstone Odyssey - splinkyhoo
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The Laurance S. Rockefeller Preserve at Grand Teton has "Activity Backpacks" for use that guide the hike. The backpack had a pack of cards listing activities, a magnifying glass, binoculars, a bandana, pens & pencils, a journal (that you got to keep) colored paper squares, glue stick, wooden frame (for observing clouds) and information posters on local animals, birds, plants and scat (poop).

GrandTeton