Perhaps you should consider doing something special for your bride this year. Every relationship needs nurturing. Chances are you and your wife have been focusing heavily on your infant or expected child. Tend it now and you'll always have each other. Ignore it at your peril.
Some jewelers also sell items designed especially to celebrate the mother child bond.
There are motherhood bracelets, necklaces and rings that feature settings to be occupied by your children's birthstones. These have a special advantage. Whenever you have another child you've got a ready-made gift idea at hand. And she'll always treasure such mementos, to be sure. Guaranteed to melt any mother's heart and keep you in good graces longer than any box of chocolates.