If you have a bench top router set up, then you can make a handle very easily.
I used a piece of hardwood stock, and planed it to exactly the diameter of the hole.
Some handles are 1 1/2", some handles are 1 1/4", some handles are 1".
After planing take your squared stock to the bench top router table and put in a standard round over bit. For creating a handle you'll run the stock through 4 times, one keep side. This will create a rounded each for each side and create a dowel shaped handle.
Just don't run it to the end of the stock and it will leave a square end on it to create the handle top/stop end.

For a 1" handle use a 1/2" round over bit. For a 1 1/4" handle use a 5/8" round over bit, and for the large 1 1/2" handle you need a very large 3/4" round over bit (this maybe hard to find).

Handles around 1" to 1 1/4" seem to feel right to most people....

I can make you a handle and ship it to you if you need one.....

Jim Rogers