Today at PetSmart, I bought this in the small animal section (I think it's for holding hay for a guinea pig or something?):
and then crammed it full of shredded paper, a couple of half chewed up sprays of millet, some Nutriberries, toys of various types, a bamboo skewer with chew stuff speared on it and voila! They're all fighting over it.
It's all natural wood, no finish to it and is so light, it must be pine or maybe balsa? I doubt it's balsa, it must be pine. Anyways, it's definitely light weight enough to serve as a chew toy in and of itself. It was $4.99 which is a total steal considering a small lame toy that would undoubtedly get ignored costs at a minimum of $7.99 there... easily up to $14.99 for a medium sized toy. $4.99 filled with stuff I already have on hand is my kind of deal.
Edit: and the shredded paper was from this huge bag I bought on sale at My Safe Bird Store for like 2 bucks. That bag has lasted me months and I'm not even half way through it.