Just try to get one of these eventually

and keep upgrading it as you get funding.
From:
wizards
Quiver of Anariel:Quivers of Anariel appear to be typical arrow containers capable of holding a score of arrows. However, the quivers automatically replenish themselves with standard or magical arrows, such that they are always full. Some quivers also create arrows made of special materials, such as adamantine, cold iron, or alchemical silver.
Once an arrow it taken from the quiver, it must be used within 1 round or it vanishes.
Moderate conjuration; CL 7th; Craft Wondrous Item, magic weapon, minor creation; Price 28,000 gp (standard arrows), 29,000 gp (masterwork arrows), 32,000 gp (+1 arrows), 44,000 gp (+2 arrows), 64,000 gp (+3 arrows), 92,000 gp (+4 arrows), 128,000 gp (+5 arrows); Add an additional +6,000 gp for adamantine arrows, +4,005 gp for cold iron arrows, or +200 gp for alchemical silver arrows; Weight 1 lb.