I would 2 quilts that are very similar with a few different colors.- I think modern moms like modern quilts. Look at Suzy Quilts blog (suzyquilts.com) and the Fernweh quilt pattern by(I think)Domestic Strata-you can google the pattern. , Suzy's quilts are great, you can do different novelty fabrics if a boy and girl with similar solids; Her Campfire quilt some people do in pinks or blues. There is so much to individualize her quilts and she is soo helpful! The Fernweh quilt is a 2 color quilt, so, different solids or a novelty and solid for each child. Have fun!!