The Hilda series by Luke Pearson is really great. I think Hilda and the Troll is the first one, but I don't think they necessarily need to be read in order.
If they don't already have one of the Viva Pinata games consider that! They're so cute and definitely spark some imagination!
For Rylee, my first thought was graphic novels if she's never tried them. My cousin loved A Wrinkle in Time even though he'd already read the book. Ghosts is very popular, too.
Marvel comics:
Other recommendations:
Additional resources:
EDIT: removed IDW's Transformers
The Hilda series by Luke Pearson is really great. I think Hilda and the Troll is the first one, but I don't think they necessarily need to be read in order.
Also, all the Raina Telgemeier. She has Smile, Sisters, Drama, and Ghosts, as well as graphic novel versions of the Babysitter's Club books that are fantastic. And Roller Girl by Victoria Jamieson.
If they don't already have one of the Viva Pinata games consider that! They're so cute and definitely spark some imagination!
For Rylee, my first thought was graphic novels if she's never tried them. My cousin loved A Wrinkle in Time even though he'd already read the book. Ghosts is very popular, too.
For Trinity, my first thought was a Bop It for some reason! Or maybe this gymnastics coloring book?