Twinkling Tink
Provides guild layouts, lookups, backgrounds and blogs.

Neopet Lovers Place
News, safety tips, list of shops and allies, art, free graphics, music, and adoptables, wishing well, shout box, and guild information, forum, donations, contests, and story telling are available.

Lozza's Site
Offers guild layouts only requirement is a link back.

Neomaniac
Offers adoptions, pet training, and rules.

Best of Neopets 404s
Offers a view of 404 pages that occur within Neopets.

No You Were Not Hacked
Offers Neopians advice on how to keep their accounts safe from harm.