Dave has the '"endless discussion" thing right. There are a million different opinions on 10,000 different products. Had a guy on here wanted to soak his leather handle in used motor oil! I think that's about the only option that can pretty conclusively be ruled out as a never do. QUOTE]
Glad I didn't come across as too argumentative. Or maybe I did and ya'll are just good folks, as is the norm here.
Painting a sheath or (easier) stacked leather handle with hot beeswax ain't rocket surgery. You can even use various degrees of hot and amounts of wax to get various hardnesses. Sometimes I'll rub a lump of beeswax over leather and heat it in with a hair dryer.
I've made various concoctions of neatsfoot oil, lanolin, and beeswax for leather. I've made the pine resin, tung oil, turpentine mixture for wood and antler. I just like to play.
'Course you have to dance naked during full moon in your back yard to mix up some of this stuff.

maybe
http://www.woodshopnews.com/columns...hing-cooking-up-the-right-finish-is-paramount
http://www.leroydouglasviolins.com/varnish.htm
http://www.ibiblio.org/london/rural-skills/woodworking/wood-treatment.non-toxic