WalMart

WalMart is always a source of free samples. Right now they have Always samples they are giving out. Their samples do have a tendency to not last very long, so you get them while you can. But check back often because they always have something new. I don't think I have ever seen them with no samples to give. Here's the link for the Always...
http://instoresnow.walmart.com/enhancedrendercontent_ektid70230.aspx