Stay in the know about weekend happenings in the Granite State: Sign up for the Weekender newsletter. Courtesy / Museum of the Outdoors MOO (Museum of the Outdoors) is planned at Camp Hale in Sandwich. Lakes RegionMOO (Museum of the Outdoors) on Saturday, Oct. 4, at Camp Hale in Sandwich. Participants can explore a series of art installations throughout the camp grounds, with an emphasis on “celebrating creativity, community and the outdoors.” Organizers caution that there will be some steep or uneven terrain. (Free)Bonus event: The New Hampshire Book Festival returns to downtown Concord on Friday, Oct. 3, and Saturday, Oct. 4.