In the new Walgreens weekend ad there is a coupon for 3/$1 paper bubble mailers. This is a good deal if you trade or sale games. This is B&M.
Also, these are the ones that are on sale.
http://www.walgreens.com/search/search_results.jsp?_dyncharset=ASCII&term=bubble+mailer§ion=A&%2Fsearch%2Fsearchbase%2FSearchOptions.resultsperPage=5&_D%3A%2Fsearch%2Fsearchbase%2FSearchOptions.resultsperPage=+&_DARGS=%2Fcommon%2Fnavigation%2Fheader_fg.jsp.1
edit: There's a limit of 6 per customer.
Also, these are the ones that are on sale.
http://www.walgreens.com/search/search_results.jsp?_dyncharset=ASCII&term=bubble+mailer§ion=A&%2Fsearch%2Fsearchbase%2FSearchOptions.resultsperPage=5&_D%3A%2Fsearch%2Fsearchbase%2FSearchOptions.resultsperPage=+&_DARGS=%2Fcommon%2Fnavigation%2Fheader_fg.jsp.1
edit: There's a limit of 6 per customer.