Here are some still-available codes:
WIMPY2012 - Diary of a Wimpy Kid Multi-prize card
SKULLBOOK - the Skull Pirate Costume
DRHARE7500 - will give you Hare Power (Bunny ears for everyone)
DRHARE5000 - will give you Dr. Hare Deluxe Balloons
DRHARE10000 - the light-and-shadow Dr. Hare costumes with carrot toss effect
POP6BIRTHDAY - Gives you the Applebees Apple Pie costume.
Some 2013 promo codes are:
DRHARE5000
DRHARE2500
skullbook, drhare10000 drhare7500
applebees12,coolkids11
Wimpy2012 Coolkids11 and DRHARE2500
Yorface is a promo code for poptropica 2013
This is one promo code I know:Skullbook
1
2132314
moneynow123
skullbook and wimpy2012
ex342lusive3
coolkids11,999191,coolkid12
Some November 2012 promo codes for Poptropica are: Wimpy2012 and SkullBookAlso try to see if AppleBees12 still works.
Buy a Poptropica Toy.