CrZ_Array
CrZ_Array is a static helper class for working with fixed-length arrays in place. Udon has no List, so these methods let you search, fill, insert and remove elements on an array whose length never changes, using a caller-provided sentinel null value (for example -1 or "") to mark an empty slot instead of a real null.
CrZ_ResizableArray
CrZResizableArray is the same idea as CrZArray, but every operation that changes the element count returns a new array of the correct size instead of working in place. You must assign the result back to your variable:
CRZ_Network
CRZ_Network is a small static class with networking helpers used across the CrZVRC assets: a safe ownership transfer and a shortcut for looking up a player's display name by id.
CrZ_ProximityActivator
CrZ_ProximityActivator is a drop-in, asset-agnostic proximity switch. You put it on a GameObject with a trigger collider, and it turns things on when the local player is inside that collider and off when they leave. It has no knowledge of what it is toggling, so the same script is reused across assets without modification.