I have used the ones that are made for VHS Cassettes. They work great.

Fed Ex also has free boxes and you can send them via any shipper you desire. The boxes can get large enough to send me hundreds of cigars... or some other destination.

they can be ordered free and shipped to you freefree.

use the entire url.

http://shop.usps.com/cgi-bin/vsbv/postal_store_non_ssl/display_products/productCategory.jsp?cat=Business+Use&prodCat=/Shipping+Supplies/Business+Use/2.+Priority+Mail&BV_UseBVCookie=yes&appName=SSOL