A fun way to incorporate new word cards into your baby's daily routine is to tell a story.  Choose a few word cards and make up a story around them.  As you say the word on one of the cards, show it to your baby, or have your baby hold up the card each time the word is said.  This will be a lot of fun for your little one and will reinforce the new words that you are teaching.  This may quickly become a favorite activity for your baby, so beware.