This is our favorite book series to have in the car for times when we're waiting and need entertainment. Sydney (5), Sabrina (3) and Luke (2) all love them. Sabrina has looked at the "Animals to Spot" version every day this year while we waited for Sydney's school pick-up, without ever tiring of it.
While I was snagging this picture for the blog, I decided to buy four more. 1001 Things to Spot in the Sea, 1001 Things to Spot on Vacation and 1001 Things to Spot in Fairyland and 1001 Things to Spot on the Farm. I had to buy some of these of used, as they're not all still in print.
Now if I could just figure out how to avoid them fighting over which one they want...