When you propose to a mother, her kids are part of the package. So some grooms include the bride-to-be's daughter in the engagement by also gifting her a keepsake token of his affection. The gesture not only makes the children part of the wedding planning process, but is the first step in blending a family. Check out these sweet finds, that won't set you back as much as mommy's ring, but have that perfect amount of sparkle.