You jump on the light on CJ's desk and turn it on. Then you click use on the lemon paper and watch the paper turn brown.
i forgot how to explain it but i know it!!
you go to the laptop room there is something by the right side of the light you will know what to do then good luck (and if you click on the rucksack and if you have the thumb drive put it in the computer)
It is on a shelf above the computer desk. You need the key (from the aquarium) and the torn page (from the trash can in the kitchen).
in the subway
Put it under the light!
you do not
on top of the lighthouse
Al the way 2 the right of the island
You go down the well.
The trash can. You find the car and drive it to the trash can. Use it as a stepstool to got into the trash can.
On poptropica Cryptids Island, the matches are used to light a lantern you get from the monastery (in the Himalayas) which eventually assists you in finding the jersey devil.