With Saint Patrick’s Day approaching, you’re in luck! This is an easy DIY project to spread out a little bit of color this year. This rainbow heart shadow box is the perfect decor piece to help you celebrate Saint Patrick’s Day. Or maybe you have a little rainbow lover in your life. Create this easy paper heart project to add to a bedroom or game room. With just a few supplies and minimal DIY skills, you’ll have your very own rainbow heart shadow box!