Icethrower:

This backpack and spray nozzle looks similar to a flamethrower but shoots a 45-foot-long cone of cold that deals 9d6 points of cold damage to creatures and objects in the area. A successful Reflex save (DC 17) halves the damage. Using the icethrower is an attack action and provokes attacks of opportunity.
The cold fuel stored in the icethrower's backpack is drained after 10 shots but can be replenished (at the cost of the item's purchase DC).
Type: Wondrous Item (magic); Caster Level: 9th; Purchase DC: 35; Weight: 50 lb.