Go here, sign-in to your Kellogg’s Family Rewards account (or sign up for an account – it’s FREE!), and enter the codeGREATTOBEAMEMBER for 100 more points!

And here is a list of codes that may still be available:

CORNYLOVESEASTER: 100 points 
FREEPTSCOMINGATU: 25 points 
WELOVETRICKSTERS: 50 points 
YOURKFRBONUSCODE: 100 points 
EASTERISONITSWAY: 50 points 
MAGICALCREATIONS: 25 points 
MAGICOFBREAKFAST: 20 points 
EARNSWEETREWARDS: 50 points 
BACKTOSCHOOL2014: 50 points 
EARNGREATREWARDS: 20 points 
KFRSHARETHANKS20: 20 points 
HOWITWORKS20PNTS: 20 points 
RKTRECIPESFORYUM: 25 points