Boys' Birthday thank you cards. Boys' custom Construction birthday party celebration flat thank you note cards printed on the invitation paper of your choice. Cute thank yous in cool yellow and black colors with vector illustration digger / bulldozer / excavator with construction stripes border. Text reads:- Thank you. I dig your great gift! These fun, funky, boy builders thank yous for kids parties and boys under construction baby showers have matching invites in my store. If you need any assistance customizing your product please contact me through my store and I will be happy to help. Original art work by webdesignhot.com.