Twilight Chinchillas has a basic hay holder for $8 and it's wood.
link:
http://twilightchinchillastoysandmore.weebly.com/wood-bedshousesswingsshelves-and-more.html
There might be more people that sell hay holders on the forum you can try looking here.
http://www.chins-n-hedgies.com/forums/showthread.php?t=20384
Also, fleece bags hanged to the cage can be used for holding hay. That's what I have for my chinchillas, and they're pretty easy to make.