Here's a little quickie object I just now put together in Blender. It's just an OBJ file that you can import as a prop. You may have to scale it some, after you import it, it will probably come into Poser as a fairly large object. It doesn't have a texture map; I was guessing you could just give it a solid color if the beans are going to be fairly small in the image.

Hope that's helpful,

Captain Jack