I place Sora at the tree's base and wrap him using the strap of the magic bag. Otherwise, he will roll around when I return. One time, I was astonished at how far he had rolled. Since then, I have always wrapped him with the strap of the magic bag so he won't be blown away by the wind. Although he didn't disappear the next day, I'm still anxious about it. And he really eats a lot.