Mice are very nervous and scared animals. They also shake because their heartrate very fast.
The best age to start handling baby mice is four to five weeks.
If you are talking about the thing that you use to get the arrows out of while you are shooting, then that is called a quiver... If you are talking about the thing that you use to keep your arrows safe, then it is what it sounds like- an arrow case
In a quiver with a cover
quiver
An adjective for the noun quiver could be violent--a violent quiver.
The word quiver is the collective noun for a quiver of arrows.
Quiver
The collective nouns for arrows a 'sheaf of arrows' or a 'quiver of arrows'.
The bag that carries arrows is typically called a quiver. It is used by archers to conveniently hold and transport their arrows while practicing or competing in archery.
quiver (case for holding arrows)
A group of cobras is called a quiver
The arrows were stored in a quiver.