Sashe uses

[Hota]

Other than a powder horn or possibles bag strap or belt, what do you use a sashe for?

[rickevans]

Keeping my rifleman's shirt closed...

[prairie dog]

In place of a belt, it keeps your frock closed and holds your knife sheath, pistol, etc.  
I wear a belt but my son who dresses native wears a sash.

[trent/OH]

It has some uses in first aid. In a pinch you can use it as a deer drag strap, but it would probably stretch it all out of shape.

[SAWMA]

Tuque, Wrap your little head when your ears get cold.

[Loyalist Dave]

Keeps open front hunting shirt closed. Supports a small bag and a knife and 'hawk.  Also have one with my matchcoat for keeping it closed at the waist.  Make a good field expedient rifle sling as I rarely need one and don't have one on my rifle.  

LD

[Trois Castors]

I used one to hold up my kilt this summer.

[sse]

I used one to hold up my kilt this summer.

Darn good thing...!

[Two Steps]

Darn good thing

 :rotf

[Fletcher]

My main outfit is much like the Voyageurs, so my sash holds my knife and hawk.
(I cheat with suspenders holding up my pants underneath)  --- otherwise they are too likely
to fall down below my incredible girth