Knock Knock is doing their $5 off holiday promo again this year. Just use coupon code: 5BUCKS through December 22, 2011 on any order.  You also get free shipping on $35+ orders during the holidays!

Reminder: Knock Knock is the brand behind the snarky post-its and epically funny notepads (& the super-useful “All Out Of” shopping notepads). Happy shopping!