You don't really use it. you use the thumb drive to use the computer to find the thumb drive type in the question Where is the thumb drive. then once you do use the thumb drive the computer really isn't of use to you anymore so move on to the next step?
you knock down the book on the top self by the computer and use it as a ramp to jump on.
use the door
In Shrink Ray Island Poptropica, with the truck you use to jump out the window of the girl's room and go and save her. ( But, that is not until almost the end of the game.)
we use it so that we can cross the bed to get to the telescope
first i got on the keyboard
flush it down the toilet
Take the screwdriver from the kitchen. Use it.
you go to cj's room and use the tiny blimp there.
Use your mouse to drag the car left and right.
Well The Paper Is For when you get to the lamp push it down and then use the paper and then there is a message
You put in x-coordinate 89 and y-coordinate 16.
On the bed theres a book about the morse code use it to tell you