The sock is on pages 8 and 9. It's to the right on page 9 next to that white bear.
On page eight, left side by the ball with the white star, behind the chair legs.
111!!!!!
on the left of the page, standing upright
Red scissors behind showtime
The scissors are at the end of the word SHOWTIME AND YOU SEE THE HANDLE THEN LOOK TO SEE THE BALDES
Its in the jewel box at the top shelf of the jewel box and its under something
The candle is located on the right side of the clock tower in the Santa's Workshop scene in the I Spy Ultimate Challenger book.
2 cookies, hands on clock and cookie mold lower left
The top shelf of the jewelry box "behind" something looks like a pair of dice to me and not a domino
The cork on the bottle in I Spy Ultimate Challenger is near the very bottom, towards the left side of the screen. Look for a small cylindrical object that is darker in color compared to the rest of the bottle.
They are on page 22 top left corner in the red circle on the jacks