in the blue ball next to the bump sign on page nine near the bottom
The snail is by the rabbit and the book with WHAT HARRY FOUND OUT.
One forked tongue is one of the snakes by the dinosaur and the other is one of the blue monsters snakes tongue.
Hint 1 : There is one clothespin on each page. Hint 2 : One is yellow and one is blue. Hint 3 : One of the clothespins blend into the background.
Look at what the boat is standing on.
I think it is the shadow right above the green mitten on the I-Spy year round challenger book.
One is on a pencil!
57
It is on the camel stamp on the left page
The ace in the "You Spy Extreme Challenger" game is located under the magnifying glass on the right side of the card. It is hidden within the design of the magnifying glass.
In the Spy Extreme Challenger game, the lunchbox can be found in the living room cabinet. It is hidden behind the blue vase on the middle shelf.
In the bottom left corner on top of the musical scale and the scissors.
They are the hotdog buns on the two forks in the middle of the page.
Theres a mouse trap with a spring on Page 25.
I think it is on the side of the can on the bottom right hand page.
The snail is right by Harry's Test. It's the shell next to it.
On page 16 of I Spy Extreme Challenger, the bell is located on the bottom left corner. On page 17, the bell is on the bottom right corner.
In the Spy Extreme Challenger, the BEST gadget can be found on the first floor of the submarine, inside the main cabin. It is located on a table next to a computer monitor.