This door sign is a great way to let visitors know where you are when you're not in your classroom... and what time you'll be back. Editable and black & white versions are included as well.
I recommend printing this on sturdy card stock and then laminating it for durability. You can clip a plain clothes pin to indicate where your class is. To fancy things up, I spray painted the clothes pin, added glitter and sprayed it with shellac. You can buy a set like that or even add some ribbon to the end of the paper clip!
TIP: Hanging the sign and/or writing in the time can be a great classroom job for your students. They love hanging up the signs when it's time to leave the room! :)