ebay or amazon are the best and easiest places
The best nail art tools you can buy are : rhinestones,liner brushes (for lines) , nail art pens and dotting tools (for dots) ;)
you can buy nail deco from the dollar store.there only about $1. or you can buy nail deco from a nail poish store there is usually one in a mall
Try googling the phrase "nail printer". It should get you what you are looking for.
If it breaks you use other nail art tools which may help and immediataly buy another one if it was helping you :))
buy fake ones or buy nail art pens
You can buy them from online selling websites for instance eBay or from agents :)
Stuff you will need: Clear nail polish, Rainbow,Red,Blue,Gold, and Pink Glitter. Just make a Paper Cone and add all the glitter into the nail Polish bottle. And eventually it will turn black! (trust me i've done this before. WARNINGS: And don't put too much of one color or it will turn out wrong And dont use very fine glitter ;D)
You can buy lots of different colours of nail polish at Zeller's in the cosmetic section. You can also check in most malls at stores like Claire's and Icing in malls they have stores that sell cosmetic and majority of the time they have nail polish as well.
You can buy a glitter guns in Hobey stores like Michel's the arts and crafts store.
staples or officemax
Nail art brushes are in plentiful supply on the internet. Some good places to start looking would be eBay as well at Sally's Beauty Supply. LightInTheBox also has an extensive assortment.
walmart, target, Anywhere!!!