Each time we declare ourselves over nail art--"Classic red, please!"--something comes along to change our mind. Ciate, which swept the nail scene with their Caviar Manicure ($25) last year, just released their new Very Colourfoil Manicure ($19). Essentially an at-home arts and crafts project for your nails, each kit consists of a base color, either robin's egg blue, pale pink, or silver, a tiny bottle of glue, and an envelope full of metallic foil squares in everything from holographic silver to sleek magenta. After painting your nails with the color of your choice, randomly brush bits of glue on top, stick the foil over the glue, and rip it off, leaving a strip of metallic behind. Layer as many colors on top of one another as you can, or stick with just gold and silver for a more sophisticated look--it's actually impossible to mess this up. As always, seal with a top coat. The mirrored kaleidoscope effect should last for over a week!