Reddit reviews Pana Black 6 Tier Large Wall Mounted Metal Rack - Fit up to 100 Nail Polish Bottles - For Home Salon Business Spa etc.

Now, you need this for all of those polishes of yours. :)

This is what I got a month or so ago. We waited for a while and finally my husband bought it and said "HA! I ordered it already!" I felt bad about the price but it looks great on my wall. It doesn't hold 100, I don't think, but it does hold my 65 polishes with room to spare. It probably does hold 90ish regular sized polishes.
http://www.amazon.com/gp/product/B00CJ0TZ2S/ref=oh_details_o01_s00_i00?ie=UTF8&psc=1

This is the one I got I'm sure it would work for essential oils. It would hold a ton of those! There are probably smaller racks!

i'm not OP but I purchased one that looks identical off amazon.

Here is the link!

http://www.amazon.com/Brand-Register-Polish-Bottles-Unbreakable/dp/B00CJ0TZ2S/ref=sr_1_fkmr0_3?ie=UTF8&qid=1409330190&sr=8-3-fkmr0&keywords=prana+nail+polish+rack !!

Thanks! I got it on Amazon.

It's a little expensive ($42), but I wanted something nice that will last me a long time, and I don't have any DIY skills that would allow me to make my own. :)

Here's some suggestions of the things you asked for.

First, a shelf to put her polish and supplies on. I have this one from Amazon which I like a lot.
Some of my favorite brands of polish: Zoya, OPI, Sinful Colors, Essie.
I know several people get on Etsy and buy Indie polishes (polishes from independent businesses and manufacturers). I don't have any experience with those, but there's some great ones from what I've seen here.
If she enjoys nail art, a set of Nail Art Brushes and dotting tools would be a nice addition. Make sure in that group is a small, angled brush to do clean ups around the nail and cuticle. VERY important for a clean look.
A base coat and top coat is also important. Look for a quick drying top coat. I recommend Seche Vite. Just be sure to tell her to read the instructions/tips for using it. It's a bit different in some ways. :)
Also, some cuticle cream with moisturizers, cotton balls or pads, Q-Tips, and Acetone polish remover are also some things she'll need.
That should be a nice beginners basket for her. I'm sure you'll get other suggestions as well.

Not the same one exactly, but Amazon has several to choose from:

https://www.amazon.com/Pana-Black-Large-Mounted-Metal/dp/B00CJ0TZ2S/ref=sr_1_4_a_it?ie=UTF8&qid=1494869641&sr=8-4&keywords=nail%2Bpolish%2Brack&th=1