Design Your Own Mom Key Chains. A fun gift for Mother's Day! Color these paper MOM inserts however you want and then slip them in their 3/12 plastic key chains for a wonderful keepsake she'll always have with her. With 12 key chains per unit you'll have enough to share for classroom or youth group activities. We recommend using crayons colored pencils washable markers permanent markers or acrylic paint sold separately online. OTCAge RecommendationAges 5 & Up Containing medium-sized pieces with the occasional angular edge these lightweight to sturdy crafts may require some assembly such as stringing beads or gluing items to create a 3-dimensional project.