It actually a glowstick, and it's found underground
On Poptropica, the things you need to get is a glowstick, a pig, a flag, and a jetpack and a water bucket.
the glow stick is for early poptropica and it is in the well in the old part of early poptropica on the far right
there is no glow stick on astro knights poptropica but there is one on early poptropica which you will find on the left side of the well.
you get the glowstick and then go in the sewer hole........ you go where th blood writing is and then there will be somthing there........
if you mean the dark one find the glowstick in the other one
You find the glowstick hidden in the well of early poptropica.You must look harder!
Yes, you can take out the glow stick. How you do it is you get out of the room you obtained it in and then go back in and your glow stick will be out .
go to the well and go up to the top level where you'll find the glow stick!
You need to go to the bottom of the well and get a glowstick and then go into the sewer by the red fire hydrant and go under ground take your glowstick into the dark room but it will be lit up. find the egg and give it to the giant.
You can go in the well to get a glowstick (comes in handy later). You will find the bucket up in the giant's garden. Climb the beanstalk to bring him the Golden Egg that you find using the glowstick in the cave. (see related question)
You go back into the other areas of Early Poptropica to locate the three missing items (and some other articles you will need). (see related question)