quiver
箙 refers specifically to a quiver: a container for holding arrows.
箙 combines 竹 (bamboo) with 服, which likely contributes the sound. The bamboo top suggests the material used to make the quiver.
The bamboo top 竹 over 服 suggests a bamboo container worn on the body like clothing: a quiver for arrows.
For フク, imagine a quiver made of bamboo that looks like a piece of clothing (服, ふく): 服 -> フク, and the bamboo quiver holds arrows.
quiver (for arrows)