I posted a while ago about how my little Mabel had outgrown her 20 gal tank, so I made her a bin cage! It took a little while, but the finished product was totally worth it. It's about double the floor space and she seems to really like it!
There's lots more room for toys, and it's much deeper; she's been going to town burrowing in the corner and building her nest.
These pics were from when I first put her in there about a month ago, I've since rearranged some of her toys but she seems so much happier in this cage!