Is it possible to make dyn object Materials?

[codecnotsupported]

Background information:

I've some preset logic to spawn/configure a set of entities with components, which are required in multiple functions.
To configure these components I need to Query the ECS.
At first I made this a function, however, to prevent bloating the function signature with Querys of these functions I moved the logic to be Events based.
One of these Components that is configurable is the MeshMaterial2d, which is a handle to a Material2D.

#[derive(Event)]
struct SpawnEntities {
    pub count: u32,
    pub Location: Transform
    pub material: ???
}

The Problem:

However I cannot (as far as I understand it), make a dyn Material2D.
because it inherits AsBindGroup which has associated types:
Data = Type, Param = Type.

Is it possible to make Materials dyn object/type erased and to be added to a enity?
I'm open to any alternative solutions.