I cut the waist band off a pair of boxer shorts, and cut the end off an acrylic scarf.(14" by 12" wide)
got the wife to sew em together and I got a new "willy warmer"(loin cloth)
it hangs down the front.
it's serves as an extra layer in the winter, stops the last couple of drops from gettin on yer kilt if you didn't shake your willy enuf and also drops between the legs as you sit, to protect your modesty.
I 'spose you could do one with a bit that hangs down the back too, may save on drycleaning bills.