First a bit of extra info. There are mainly two types of quivers - not based on design - all quivers are the same essentially, but based on how they are worn.
First you got back quivers.
One is well obviously worn on your back, the other one tied to your hip(and optionally lower thigh). Which one you prefer is up to you and the way you work on your own weapon loadout. If you wear the quiver on your back you can't wear a shield there, if you wear it on your hip it will take room normally reserved for swords and knives and it might limit your movement a bit (if you don't want to spill your arrows that is. If you've fired everything you can run as fast as you want)
So how to make your own simple quiver?
You need a base - that can be leather, canvas, whatever you got. I mean a pair of old pants can do too, you will just decorate it a bit more. Fake leather is ok as well, one of the few cases where it is.
Here is for example my old training quiver(I only used it for practice) Its made from the sleeve of an old leather jacket that I had recycled already for other uses. I would not bring it to a larp proper because well, its just a sleeve with straps on it.
Anyway back on topic
Simple quiver - materials needed, either leather, canvas, or whatever you can use for the body. Something for straps. Something to sew the leather/canvas closed.
Tools - eh, scissors, and whatever you will use/need according to materials.
Budget - varies
Once the bottom is closed, a strip of reinforcing leather is added to the top as well, for symmetry and for durability.
After that its time to add the straps. For me thats simple shoe laces(the thickest ones) they are tough enough to survive any tension and won't rot away in bad conditions. I made sure they pass through both the body AND the reinforcing bands of leather. I decided on a hip quiver, since it can be easily turned into a back quiver if needed.
If you want to convert it into a back quiver, just tie a belt to it like this and it can be worn on the back as well. If you want a back quiver to begin with, skip the part with the laces and get a shoulder strap directly.
Coming up next - boffer arrow arrangement for larp.