Is there a magic item which gives thrown ammo magic properties?

[Wartex1]

I'm theory-crafting a thrown weapon build (was considering Starknives but those are very feat intensive and expensive in general) when I came across the magic weapon conundrum.

Thrown ammo such as darts and shuriken are enchanted in groups of 50 for the same cost as a regular magic weapon, just like arrows. However, unlike thrown ammo, arrows can be made magical by using a magic bow.

Is there a similar item for thrown ammo that helps reduce cost over time?

[Geddy2112]

Get a blinkback belt. You can have 4 pieces on it, all of which return at the end of turn, allowing you to full attack every round.

Saves the cost of enchanting a ton, as you only need to enchant one batch.

[Wartex1]

Blinkback belt doesn't work with ammo due to ammo being destroyed.

I was already going to use it with a Starknife anyways and just abuse Quickdraw.

[BloodSnake'sCha]

Can't you use one of the Magic Quivers for darts, if I remember correctly darts are bigger arrows(I was trying to find the source for it but I can't remember were I read it).