Student Achievements - Mural Project

My students are working on a 84" by 84" mural which they designed everything for, proposed to the principal for permission to install. I had given them a time line of two weeks, which at first, my students were protesting as "not enough time". They have been working on this for 3 days and may very well finish today. I really have no clue what I am going to do with my students next week if they finish the mural so quickly.