Page 8, on the middle gate, middle half, wire train, turn book sideways
its in the bed sheets
in you spy spooky night on page 18-19 the X is on the left page on the middle shelf on the vary left of that shelf there is a map look near the bottom of the map and you'll see an X.
The horseshoe is on the bottom of A. Horseman's grave on page 21.
The rabbit is made out of tree branches on page 21
on the baseball upper right
The moon in "I Spy Spooky Night" on page 30 can be found on the right side of the page, near the middle, hiding behind a cloud.
On the clock on page 17
On the horse top right
it is a an outline made of tree branches in the tree on page 20.
LION OIL on page 23
On the floor by the chair, at the edge of the page by the wishbone, and by the saxophone on the clock.