AFAIK my unit (105 Mdm Bty, 1 Fd Rgt) allready sponsors a caddy unit, but I will have a chat to the Quatermaster next time im up that way to see what can be done. Alot of the new stuff is in short supply even for the actual Army itself, things like the Australian badge that go's on the velcro strips of the new cams are worth their weight in gold at the moment, however being a caddy unit im not sure if you guys even wear them? As to feild gear, I will see what I can do, I dont have a whole lot of weight so all I can do is ask, there may be some old stuff from former soliders who have left the army that we can give to you rather then destroying it. I make no promises however as I play no part in the decision making process.
I should also be able to put you in contact with the appropriate people to talk to about sponsorship, however I dont know how its going to go, the whole Army vs RAAF thing, I suspect they will say go ask a RAAF unit.
I can also get you unmarked stuff from the uniform store, provided your willing to re-imburse me the costs. I will just have to run it past my superiors to make sure its all legit and ok. The stuffs pretty cheap, we get it at discounted rates.
Send me a PM with more specifics about what your after and how much. I might be able to help you out.