Check out EthiCal and other companies for ethically-made products!
Other purchases organizations made:
A reusable keg for beer brewing- Cal Brewing and Wine Club
Donation to the National Wildlife Association - CalSol
$300 worth of pizza - Biomedical Engineering Society
LED Christmas lights - UC Rally Committee
These purchases show that your club is not limited to the above items- get creative! Just make sure your purchases are made sustainability, or meant to last a long time.