Any other books like Fudge Series?g

Hello,
I was wondering if any of you have suggestions for books like Judy Blume's Fudge Series? I've just finished reading them to my niece and nephew and they loved reading about Fudge and Peter. I've started reading Beezus and Ramona to them but they aren't as into it. My nephew is 6 and my niece is 4 if that helps any. Thanks!