Courtesy of Wikimedia
The silo is particularly random, but would be a great hiding place.
Silo near the ag quad
Bottom floor of Cooper
In your bed
In the rows of Brackett 100 (the auditorium)
USC (their finals are easy)
Fourth floor of Daniel
Top floor of Hunter
C-1 Commuter Lot
Under the bridges of the Shoeboxes
Top floor of Sirrine