Three of Rebekah's biggest loves are playgrounds, pools, and trains. On Rebekah's travels through Oklahoma, she got to encounter all three. Checotah has a old train station, intact from the late 19th Century, and Rebekah loved climbing on the train (although the Depot Museum was not really captivating for her).
Plenty of kid-friendly parks are also located around Lake Eufaula.
And Grandpa Roberts set up a little pool that was utilized daily, sometimes multiple times, by Rebekah.