To continue their birthday celebrations, TNT has put a free goodie bag in the NC Mall: Neopets 20th Birthday Celebration Goodie Bag. Since you will only get an NC item from this bag you can also claim it on your Side Account(s).
This goodie bag also comes with a discount code you can use in the NC Mall:
This was the Free NC Goodie bag given out to celebrate Neopets 20th Birthday! And while youre at the mall, make sure to use the limited time Discount Code! Only available through November 22nd, type the code Y21BIRTHDAY into the discount box at checkout and receive 150NC off any purchase of 1000NC or more! Happy Birthday Neopets!