J.C.
I have 6 children and last year when I was pregnant with the 6th we actually did handprints. I got aprons for the grandmas/moms and put the kids handprints on them with their ages. Then I put the phrase "Grandma's helping hands" on it. It was a big hit with some and with others it wasn't so great. But IMO anything that has the kid's creative input (the more that they are able to do) the more that the grandparents are going to like it. Good luck.
J.