- Wooden dowel
- Duct tape/ handle material of your choice
Just put the tape on the end of the dowel that's colored (if there is one, and it clashes with the color you'll be adding), to make a handle. I made a loop at that end as well, so He could put his hand through to give Him more control.
There is, of course, the risk of breaking it from hitting someone too hard, but I'd reckon that it won't break very easily. Of course, that also depends on what thickness dowel you go with.