Crafts stores stock lots of sizes; simply coat a few with satin-finish paint, attach a ribbon, and slip into secret-admirer mode.
For more ideas, scroll through our entire collection of Valentine's Day crafts and handmade gift ideas.
Paint heart tops and edges; let dry completely, then flip and paint backs. Repeat until color is fully saturated.
Optional: If desired, add a hanging loop: Make a dip in top edge with awl. Add a drop of craft glue; push in screw-eye hook. Let dry. Thread ribbon through hook and tie knot.