What is a good gift for our mom on Mother's Day?

Mother’s Day is fast approaching and we don’t have a gift for our mom. Since she’s busy with work, household chores, and taking care of our new born baby brother we can’t squeeze the time to ask her what she would like to get for the upcoming event. Our dad suggested that we should go out and look for a good baby bag while our mom is at work. We all agreed and dad gave me his credit card so we could purchase it tomorrow.