Wow, this was another tough one for sure. Some of the differences are so discreet, we were staring at this picture for ages. We guess the most obvious difference is Buzz Lightyear's chest plate. In the first image it has a bright red button on it (presumably so he can do all of the astronaut things he needs to do). In the second image it's not there at all.
We can't get over how subtle this next one is. Take a look at the door. Have you noticed that in one image the key slot is vertical and in the other one it's horizontal? This is some next level attention to detail. Last but not least, our alarm clock. In the first image, dots denote the hours on the clock face. In the second image, we can see the number two instead of a dot.