How old are your kids? If they are still young then this would be cute. One year when my adult children were little, I bought a plain white sweatshirt and some fabric paint (in pastel pearl colors....pink, purple, and blue, since there were only 3 kids at the time
) I had the kids all pick a color and put their hand prints all over the shirt....then I wrote on the front of the shirt with one of the paints "Handmade for Grandma". My mom still wears that shirt today
Grandparents love crafts from their grandkids!!
PS....I used a silver glitter paint pen to write each kids name on their handprints. It turned out really nice