I have a 1 year old REW guinea named Ferris. He is a big boy who loves to eat. No one wanted him because he was all white with red eyes as was about to be sent to the pound :( I'm a sucker for outcast and he fits right in with our crazy busy house!
I have a 2 x 3 1/2 C&C cage with a second 2 x1 second story. Navy Coroplast for the bedding holder. I use Uhaul pads underneath fleece.
My Cage Specs:
C&C Cage, other combination, Includes upper deck, Meet or exceed recommended sizes (see www.CavyCages.com)