Here's the most recent giveaways and/or contests I've come across recently.
from Polish or Perish -- Official Polish or Perish Banner Contest!
from Manicure Mommas -- 200 Follower's Giveaway!
from Glittermillie's Nails and Sparkle -- Small Giveaway!
from You've Got Nail -- January Giveaway!
from ~Polish Freak~ -- Giveaway! Giveaway! Giveaway!
from KONADDICT -- Win an ALL NEW RUBY KIT by konad!!!
from Playing with the polish -- First Giveaway
from The Swatchaholic -- Giveaway Time!
That's all for now!
(edit: added last 2)