How about a bit of a retro-mix, like portable tubes (like gun-barrels) from which arrows are shot using evthene? Or pellets/bullets?

Come to think of it, someone could strap a set of those tubes around the forearm and use that as a repetition weapon ("six-shooter"?). (Although reloading might be a bit cumbersome unless that's done using evthene also.)

Or a Y-shaped thingy like a slingshot, but using evthene to direct projectiles with great accuracy from between the tips of the Y instead of an actual sling. A "'thene-shot": toss a pellet into it, aim and fire. Fast and accurate. And lethal.