You can get a pole at a steel place, you can have it powder coated for an accent color, great pop. If you have threads put on the ends you can use collars and attach them Top and bottom with bolts into the floor and ceiling. ((into a joist or rafter.)

Pirateroo is correct, you can find the pole at any steel supply or welding shop. The welding shop can cut it to length and the steel is relatively inexpensive.

Thanks for asking !
Dan