I checked out some great sellers and I've come up with a few things off Etsy that a tween girl would just die for (and maybe you would too!). Have a look!
Here is a sweet little bunny pendant from Buster and Boo (http://www.etsy.com/shop.php?user_id=5486148). She has tons of cute pendants that would be just right for a jewelry loving girl. These pendants come on a sterling silver bail and a cord necklace. Check out her shop for details on how to get free shipping!
These cute little caps are from LSK Crochet (http://www.etsy.com/shop.php?user_id=5482783). They come in baby and big girl sizes too! I have something from this shop and I just love it. Very cool stuff from a very nice lady!
I don't know what it is about these girls, but they either LOVE soap and perfume, or they don't. Mine is hating it. Either way, who wouldn't go for this adorable rubber duckie soap? It's from Kreated by Karina (http://www.etsy.com/shop.php?user_id=79515). She has lots of really yummy soaps, lip balms, and other goodies in her shop!
From left to right:
A cute little pouch that would be perfect as a pencil case, from meanbean (http://www.etsy.com/shop.php?user_id=14035) (she can't be that mean of a bean if she makes such cute stuff!)
Unique dolls from forensic (http://www.etsy.com/shop.php?user_id=5237167). I love their faces and the fabrics!
A pretty ribbon belt from The Accessory Lady (http://www.etsy.com/shop.php?user_id=5461621). She's got a bunch of other adorable accessories in her shop (she is the accessory lady, after all!)
Fun and funky hair flower from PamperingBeki (http://www.etsy.com/shop.php?user_id=5067587 ) ...who wouldn't feel like a goddess with this in her hair?
And last but not least, a rocking necklace from Tizzalicious (http://www.etsy.com/shop.php?user_id=5119701) !!
Now go shop!