Caswell Massey's Yellowstone collection, in collaboration with Yellowstone Forever, includes a series of five "Fragrance Tonics" (Eau de Toilette splashes) inspired by Yellowstone National Park. "Old Faithful Fragrance Tonic is an unusual fragrance derived from living floral captures near the Old Faithful Geyser, with wonderful base notes of Moss and Pinesmoke combined with a blend of aromatic notes, including Yellowstone Sage, Blue Lupine, & Larkspur. Derived from rare botanicals near the most active thermal features in the Park. Old Faithful is the most unusual and unique scent, with Living Sagebrush, Tree Moss, Birch & a strong scent of Smoky Wood." $48 for 100 ml, or there is a multi-purpose skin and hair oil, $42 for 30 ml, either way, a portion of the proceeds benefits the park. You can read more about the project here.