A boys birthday party built right in the back yard? Yesa very effective idea when using a boys construction party theme! I first saw these party idea on Sweet Designs By Amy Atlas and it was styled by Belinda of Styled by Belle. This is a popular theme so you might think theres nothing new to see, but Belinda has come up with novel ideas and darling supplies that enhance the dessert table. The cake and cupcake decorations fit right in with the construction party theme, too.