A year pass to the national parks ($80; nps.gov) is a great gift any way you cut it. Another one: a classic Ranger Doug's Enterprises poster. Between 1938 and 1941, the federal government's Work Projects Administration commissioned some 35,000 poster designs, including more than a dozen celebrating the national parks. After extensive research, Ranger Doug returned 16 of them to circulation, and also created a slew of similarly vintage-style ones for other parks. Regardless of which you buy, 1 percent of the proceeds from the 13-by-18-inch prints go to the parks themselves to encourage arts programs.