Here's another one we used for the Alternative Gift Market:

DON'T REST, YE HARRIED SHOPPERS

Don't rest, ye harried shoppers, then, let nothing you deter.
Avail yourselves of savings now, with interest deferred,
To save from 10 percent and up, come in and join the herd.

         (Refrain) Oh, try buying your comfort and joy, comfort and joy!
                   Oh, try buying your comfort and joy!

From Saks, Wal-Mart and Bloomingdale's the blessed ad men came
And unto us, their customers, brought lures to play their game,
How that if we don't spend and spend, it sure would be a shame!

         (Refrain) Oh, try buying your comfort and joy, comfort and joy!
                   Oh, try buying your comfort and joy!