How create Skeletal Mesh for a sphere?

I’m doing a school project but I have a problem. I would like to make a game that would look like the “Grifball” mode of play in Halo. I followed the tutorial Unreal Engine 4 Tutorial - Equipping and Unequpping a Weapon - YouTube but the problem is that my “weapon” is a sphere created from UE4. I do not have Skeletal Mesh. I would like to know how to create one for my sphere.
I am sorry in advance if this question has already been asked, I searched without finding an adequate answer.

You could export the Mesh to your Computer and reimport it again as a skeletal mesh