A wallet card for a mother could be a small, durable card that fits easily into a wallet or purse, serving as a constant reminder of love and appreciation.

It could feature a heartfelt message expressing gratitude, admiration, and love for everything she does. 

The card could be adorned with beautiful artwork or design elements that resonate with her personality and interests. Additionally, it might include any special photo or any special date that you want on this card.

Overall, the wallet card serves as a tangible token of affection that she can carry with her wherever she goes, offering comfort and joy whenever she sees it.