Happy nails - stickers for kids Living the dream down to their fingertips? Unicorn, rainbow, guitar or space rocket... Kids are gonna love this: dressing up their nails with 72 cute stickers!! Happy nails is a set of 72 nail stickers for children. 1 sticker on each nail and they’re ready for a new adventure. So, let's get on board? The funniest manicure: safe and creative Beyond easy to use: stick it on, then stick it out when the game is over. The stickers can stay put for 1 or 2 days, provided they’ve been applied evenly on clean nails. They resist a good hands wash but not a bath. They also enjoy a second life in a notebook.