Great Nail-Related Gift for 12 year old Girls?

I am in totally foreign territory here. I would like to get a manicure/nail related gift for a couple of 12 year old girls. Apparently they like doing their nails, they experiment with French manicure type things (whatever that is) and other fingernail fun.

Is there anybody out there who can offer a suggestion? I was hoping for maybe some cool polish with a pouch, or sparkly stuff, decals or whatever they are called, etc. Not junk. So, something consumable, but with a keeper like a bag, pouch, …I was noticing a nail dryer. All this stuff, beyond my experience. 😉