It's sort if like having a TelePrompTer to glance at when I loose track of my day.
I recycled discarded dry erase boards, laminated each grade level and taped it to the top with packing tape. I hung them from the laminated sheets (nothing else was working) but you could certainly Velcro the boards as well.
Tomorrow I'm going to share with you my favorite attendance and behavior management ap... I'm taking attendance on an iPad these days! Perfect for the messy art teacher... My attendance book looked like one big disaster before I went digital