The 2 bubbles are in a green bottle on page 17, look on the right edge of the page halfway up the page.
In the I Spy Extreme Challenger book, the bubbles can be found on the page that includes the "Under the Sea" scene. Look for a cluster of bubbles floating around in the middle of a coral reef image.
The bubbles are in the green bottle next to the horseshoe magnet on the right hand page. Once you see it, they really stand out :)
In a green bottle on page 17
in the green bottle on page 17
One is on a pencil!
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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.