know how to rock

to begin with, i would never place a baby in a tree top.
especially on a windy day.

if, however, i were to do so, probably some sort of sling would be best rather than a cradle. also, i would be sure to select a bough that appeared sturdy and could support a baby on a windy day.

nonetheless, let's just assume the bough did break. i think that if you're going to put a baby in a tree, it would be a good idea to place some sort of air mattress or a big cushy mat of some sort under the tree. at least put a helmet on the child.