As you may know, Valentine’s Day is on its way, and cupid is flying every so high in our minds. Let’s make this cool LED heart, the supplies are wooden board, red yarn, a drill, a hammer, carpenter nails, battery powered LED Lights and white spray paint. Paint the board. Find a template of a heart online and print it out. Hammer nails around the outline of the template. String yarn through the nails weaving in and out in crossed patterns. Draw circles on the back of the board, where you would like the LED lights to go through. Try to make this as random as possible. Read what to do next in the source.