Yes, please don't have a "mother of the year" award. It winds up being a popularity contest and just causes hard feelings.
We've tried different things from bookmarkers to flower baskets and even little corsages. This is what worked best and what we do yearly now: on the Saturday before Mother's Day, dh and I go to a local nursery and get small pots (4 inches square) of individual flowers or plants. We get a wide variety, from herbs to flowers to veggie plants. These cost a couple of bucks each, and the nursery gives us a discount for buying a certain number. Then we put these on the communion table for everyone to look at during morning worship. Afterwards, all the LADIES may come up and get one. Some ladies get Gerbera dasies or impatiens or ivy, while other of us practical gals can choose a tomato start or some basil or chives. I say ladies, because not all ladies are mothers and that can be very painful for some. So, we invite all women over the age of 18, I think, to come get a flower.
One warning, though, is to let the older gals go first. Otherwise, some young chick might get her hand smacked reaching for the last geranium!