There are two different footballs in Poptropica.
If you are talking about the Great Pumpkin Island's quest item football, you need to get the pen from the desk in Linus and Lucy's house after Linus leaves, and he will leave after you give him the lemon sucker which you get from Pigpen for finding his trick-or-treat bag. After getting the pen, head left to Charlie Brown's backyard, where Charlie Brown and Lucy are practicing placekicks. Give Charlie Brown the pen, and when their scene is done, they will leave the football. You can pick up this football and then use it to get Snoopy's aviator cap and goggles from the tree above his doghouse.
Or, if you are talking about the wearable football that you have seen random characters wearing, such as in the beginnings of Early Poptropica and Shark Tooth Island, it is not available. It is uncustomizable and can not be bought anywhere (unfortunately). Sorry!
Hope these help!
you take the football.
Throw it up into the tree and get Snoopy's hat.
I don't think you get anything.
look on the cursor and do it on opposite and go up to let the paper football higher
bubble gum
You use the football after Charlie Brown misses it.
after you give lLinus the blanket, go back to snoopys house, and click on charlie. he will play football with luci, and when he is done, the football will still be there.
The one to the right f Snoopy. He is looking at it. Go to your items and click "Use" on the football.
go to the place with the leaves and you will find a football
On the potato farm. Located in the north-south region of the Bahamas.
you use it to put on snoopys dog house to get the flying hat
Press Ctrl Shift R and you will change character. Keep pressing Ctrl Shift R until you get the football in your hand.