These helpful row-marking insects appear to be standing guard above your tender seedlings.
For each, cut a set of heart-shaped wings out of a plastic jug. Hold the wings in place on top of a plastic cap and use a pushpin to make two holes through both. Fold an 18-inch length of floral wire in half and thread the ends through the holes as shown, twisting the wire to secure.
For the eyes, use a hole punch to make black craft-foam pupils, and use scissors to cut larger circles from white craft foam. Attach the eyes to the cap with a 4-inch length of floral wire as you did with the wings, then trim any excess.
For the tag, stick two pieces of white duct tape together, then cut out a word-balloon shape. Write the name of your plant on the tag with permanent marker, then use more duct tape to secure the tag to the floral wire.