A friend with a Biker Scout helmet showed me a mod he had done recently... He went to the local Hancock Fabrics store and bought car headliner material (it's smooth material that is slightly padded). He placed it in the top of his helmet (3 ply - folded twice) and around the sides and back (2 ply - folded once).
It looked very nice. My only concern is replacing it when it gets funky. When you costume alot, you have to be concerned about all of these soft parts that we have getting "the funk"!
I think I could glue Velcro inside my MSH, then make the headliner pieces, and sew Velcro onto them, then attach them with the Velcro. When the time comes for replacing them, it wouldn't be that hard to sew new pieces.
Any ideas? Anyone ever seen/tried this before?