More often than not, it is the simple things that a woman really appreciates. Sure there are the high maintenance types that you can never seem to please, but most women are easily satisfied by simple acts of kindness.
Giving the woman in your life flowers or candy on a day that is not a special occasion is a huge plus in your favour. You don't want to neglect giving on special days, but think about it, if she is at work and she gets a dozen roses, people are going to ask her what the occasion is. When she tells them that you sent them