not sure how many of u have gotten into free samples and coupon kinda stuff, but in the past i have contacted bird food companies, just asking for samples. and they send you product samples by mail!
its the best!
i found a few links that r useful

http://itsallfreeonline.com/free-samples-for-birds/

http://www.parrotforums.com/amazons/...d-samples.html
This is another forum, but they posted good info, remove if not allowed.

https://ladygouldian.com/catalog/free-samples 2 free samples with every order

I have found that is cuts down on spam and viruses if you contact the company directly instead of going through a "free" website like freely or whatever.

just fyi, not free but so cool
http://www.squawkboxes.com/
you can have surprise boxes sent to u once a month for your birdy! omg! so cool! out of my budget. but 4 some it would be great im sure.