Maybe this year you could consider hosting a "Grandparents Sunday."
Grandparents are thrilled to be a part of anything that includes their grandkids. What's more, if it's JUST them and the grandkids, all the better! A little boost to your attendance is never a bad thing either.
To allow grandparents to see your ministry in action goes a long way. You may be able to do away with any sort of "babysitting" mentality as grandparents participate in your worship service.
It promotes at home faith based discussions. Opening the door and allowing kids and grandparents to share a faith experience may enable them to carry this same conversation on at home in a natural way. This truly is family ministry at it's finest.
Schedule this on the traditional "Grandparents Day" and invite all grandparents. There will be those kids who don't have grandparents close for a number of reasons. Be sure to encourage them to "adopt" grandparents for the day.
Make invitations that kids can pass out ahead of time to give grandparents plenty of time to plan to be a part.
Meet & Greet/Breakfast: Schedule this about 30 minutes prior to the start of worship. More time and kids get fidgety and grandparents become uncomfortable. Less time and you won't be able to provide anything meaningful. Provide guided discussions at the table for grandkids to "interview" grandparents. Include questions like "what was church like when you were younger?" or "when did you first come to know about Jesus?" (Don't make these too personal. We can't assume that all grandparents walk with Jesus yet)
Photo Keepsakes: Provide a chance for each grandparent to have their picture taken with their grandkids. Set up a small photo area and invite all families to participate. Provide this as a free service. Stick it in the mail along with a note thanking them for coming. Grandparents LOVE this keepsake.
Give away fun grandparent prizes. Coffee cups, gift cards, and even grand parenting books are awesome resources. Items with your ministry's logo are also great give a ways.
Include grandparents in all that you do in the service. If you use a number system to choose a quiet seat or to select players for games, include the grandparents and allow them to play too. It's so neat to see grandparents given the opportunity to "play" in front of their grandkids.
Grandparent/Grandchild Element: If you know of a grandparent/child that sing together, include them as part of your service. Know of any that would do a great drama together? Use them too. Celebrate all generations!
Leaving a Legacy Class: Most grandparents wish they had done more when it comes to developing the faith of their children at home. They're very willing to learn how to do this better with their grandkids. Offer a class for grandparents on leaving a spiritual legacy. In it, offer suggestions on ways that grandparents can help to develop the faith of their children and grandchildren. (You can offer this class during the kids Sunday School time if you do Sunday School prior to the worship service).
How about you? Can you think of any other fun ways to include grandparents in a kids worship service?