Laminate and hang outside your classroom to let others know where your class is when you're not there.
I have these hanging on a clip outside our classroom and it is a student helper job to turn it to the correct sign when we leave our room. The clipart pictures are not only adorable, but help those students who cannot yet read the signs still do their helper job correctly.
The language is in Spanish and English
These signs have been very helpful when we have out of the ordinary scheduled activities.