I really enjoy the classic National Park memorabilia including posters, postcards, and even coasters. If you have visited a National Park Visitors Center then you have probably seen these for sale — and it is always good to support the National Parks by purchasing on site.
However, I recently ran across a couple of websites that sell these types of products online which make great gifts or physical reminders of a previous visit. I encourage you to check these out and support our National Parks. Each of these listed claim to donate a portion of their proceeds to the National Park System. rk