It's only fair. The Card Moms like cards. Moms also usually have VERY specific ideas about what kind of cards they like. Some moms are totally into the funny, gag kind of cards. Find out which kind of card your mom likes and get her THAT kind.
Cards can be VERY expensive.
The Gift Making a gift isn't as hard as it seems. If you are crafty and know how to make something your mom will love, you are way in luck. But you can spend just a little money and get your mom a version of something expensive that she really loves.