We need your help!

We need 20 khaki shirts, different sizes for different kids. Short sleeve preferred for costuming for Jaben's play. $$ is short so donations would totally rock. Can you help?? Do you have ideas where these can be found? Something along the lines of boy scout shirts, camp shirt style, that kind of thing is what we need. I have NO idea where to look!! If anyone has any ideas, it'd be GREATLY appreciated! Thanx!!