I use regular hangers augmented by 3 inch black binder clips as sold in office supply stores. The wool ones get places in plastic suit bags with cedar chips and the man made fibers just hang in the closet. If I notice that I haven't worn a kilt for a few months, I hang them on the door frame for a day, just to air out.

I also make sure that I hand the kilt I just took off on the door frame at least over night to ensure it is aired out before I stash it in the closet. Oh, and my closet is self cedar lines.

I use the small steamer to freshen the pleats if needed before I put it on...

That's about it!