Been a while since I've seen this posted here so I thought I'd do it.
ArtsCow sales customised stuff and prints, this particular deal has been very popular in many places for its $0.99 custom mousepad bargain. I've ordered playing cards, mousepads and photo prints from them in the past and have been happy with all of my purchases.
After you've created your desired mousepad and added it to your cart, simply enter the coupon code during checkout (use the normal checkout rather than the PayPal checkout to enter the code, you'll still be able to use PayPal as payment later).
EDIT: I forgot to note that the coupon works for only one mousepad, each additional one is $3.99. It's also per household so creating many accounts to take advantage of the deal multiple times is not recommended … you'll probably have your orders canceled.
I'll also leave these other coupons in case somebody might want to use them:
Use this coupon code to purchase ornament at only $0.99 with free shipping
Z099ORNAMENT5FWB8Use this coupon code to purchase cosmetic bag at only $1.99 with free shipping
ZYHH57ZUse this coupon code to purchase 6"x6" or 7"x5" photo book at only $1.99 with free shipping
Z199PHOTOBKSV93UVUse this coupon code to purchase watch at only $3.99 with free shipping
Z399WATCHESG6JG5Use this coupon code to purchase phone cover at only $6.99 with free shipping
Z699PHONECOVERFEDD6
Here's my referral link for people who don't mind them: http://www.artscow.com/?Ref=1456885
I can vouch for the quality of these mouse pads.
A++++ would 99c again.
In fact I will 99c it right now