I love torts (and other animals), but I'm also a plant guy. Tortoise Table is a great website for plant identification and ideas; I use it all the time. If you check out the houseplant and succulent section, I think you will find some good ideas...
The gold dust plant is not in the dracaena family...it is Aucuba, I spelled in incorrectly in my previous post and found it on tortoise table, which states that it should not be fed to tortoises...
http://www.thetortoisetable.org.uk/site/plants_19.asp?mode=main&catID=177
After taking a closer look, I think it is Acuba instead...can't find anything on tortoise table though. Not sure if it is OK to feed. My apologies if ive added more confusion.