Magnetic Paper Towel Holder

After a few disappointments with chips in the laundry, I switched from rags to paper towels
I've used this kind of portable towel holder for years, but found it kept falling off the top of my shop vac where I tended to park it.

So, I countersunk three hefty 5/8" X 5/8" Neodymium cylinder magnets, leaving about 3/32" protruding at the bottom:

Now, it sticks like glue to pretty much any steel surface, and is easy to move around the shop:

