Xmas Valley Dunes. Fun place to play just don't forget your flag. Bikes have to have them now also.
Military plane crash sites/memorials south of Xmas Valley Dunes. Fun to hunt for and amazing once you find them.
Ghost town of "Stauffer"
Obsidian deposits and views on Glass Buttes
Crack in the Ground
That is big country out there with a lot of cool stuff to see. I guaranty you won't have time to see it all. Snow will keep you out of Newberry Crater and other places like that until later in the year.
Oh yea don't forget your fishing pole for the absolutely unforgettable "Cabin Lake".