DD was about 4 when she started liking the idea of a chapter book rather than a picture book that could be repeated many times. We started with a book called Toys Go Out that the librarian recommended, and she loved that. She got the sequel for Christmas but we haven't read it yet. It's nice because it's a chapter book with a theme throughout, but many of the chapters read as little mini stories unto themselves. And it's reasonably long without having some of the emotional themes of something like Charlotte's Web, which DD could not have handled.
A kids abridged version from when I was a child of Alice in Wonderland (turn the book upside down for Peter Pan instead!) was a hit, and we started Peter Pan, but it was too gendered-"girls are too smart to fall out of their carriages, so there are only lost boys" and annoyed her so we quit. We've now been reading the Flat Stanley series, which she can read parts of. They're fast reads, so she, DH, and I each read a chapter and they last about 2-3 nights that way.
We tried Ramona about a year ago, which I loved as a child, but it was a dud for her. I might try again now that she's a little older and understands things like "a quarter of an hour is 15 minutes but a quarter is 25 cents, so Ramona gets them mixed up and that's kinda funny." She knew a quarter was 25 cents, but couldn't figure out why Ramona was still late, since she couldn't tell time. Now that she's learning stuff like that, she might like it more.
DS is just over 2. He barely sits still long enough to read a board book, so I think he has a while before chapter books!

He did tonight tell me he was going to read to me though, and told me what happened on each page of the book.
