If you've been thinking about replacing that old Nook ereader then I have some good news for you. Barnes & Noble just launched a new trade in program for their older ereaders. Bring your Nook 1st Edition, Nook Color, or Nook Tablet in to a B&N store any time between now and 17 January and B&n will give you a $30 off the purchase of a Galaxy Tab Nook.
The offer isn't good for the Nook Touch (which B&N was still selling as late as the middle of last year), and it would seem to only be good for buying new hardware (in other words the credit can't simply be applied to your Nook account). But if you've been thinking about upgrading your existing Nook device, now would be a good time.
It is a shame that this wasn't announced last week, though. You could have combined this credit with the Black Friday sale and gotten the Galaxy Tab 4 Nook 7" for under $100.
For more details on the trade in offer, check out B&N.