To show your appreciation to a mom, there are things that can be said and written, activities to perform, places to visit and gifts to give. Ways to show your mom that you care with words include dedicating a song to her on the radio, singing her a message of appreciation and calling her in the middle of the day to tell her that she's on your mind. Acknowledge what she does with a mention of something specific.
Chores you can do for your mom include fixing something in her house or yard work at her house, wash her car, make dinner or breakfast in bed for her, and make plans for everyone in the family to visit simultaneously. Another possibility is to plan a surprise party for her, especially if there is no occasion to celebrate.
Combine the gift of time and writing by recording a family history together. Print out a list of quotations that remind you of her or that she might consider valuable. Write short notes for her about what you appreciate, and leave them around her house.
Frame special photos for her walls or artwork that you have created. Design a website dedicated to her with all of the things that you love and appreciate about her, or burn a family photo CD.