The following coupons were found in specially-marked Ziploc Value Packs (namely Freezer Bags).

All expire 3/31/2013 and state One per purchase.

$1.00/2 Ziploc brand bags, any
$1.50/2 Ziploc containers, any
$1.00/2 Glade Winter Collection products, any two
$2.00/3 Glade Winter Collection products, any three