I love glitters that don't look too kiddy; those from China Glaze are perfect.
I like the idea of imprinting magazine or newspaper texts too, but have yet to try them. One of my friends tried the decals and those looked very pretty too.
Yes I find it very clever. I've seen photos of people who draw cartoon characters with super tiny details. It's amazing. I don't like the kiddy designs, but the skill needed for nail art is... quite something.
I bite my nails and I've managed to create modern art on each finger, which only I admire and file & tweak sometime.
I've been interested to explore nail art but my partner is least interested in make-up or artificial methods of skin/hair/nail maintenance. I've just taken it upon me to admire these things elsewhere!
I'm a huge fan of Disney so I really like any Disney themed nail art. I also enjoy a good nail art inspired by a song, like a What does the Fox say. My current obsession is Mickey and Minnie nail art, they are the easiest to do.