One problem I've had though is when the reader arrives when we're in the middle of something and not quite settled enough for a guest reader. To solve this problem I made a sign to hang on my closed classroom door. It lets your visitor know that they should knock loudly then be patient for just a minute.
Graphics From the Pond.
You can download a copy for free by clicking on the picture. The colored version is adorable but the black and white one would be great on colored paper :)
Since I'm still on summer vacation (yay!) here's a picture of the sign on a door in my house.
I have linked this freebie up with Manic Monday freebies. Click on the picture below to find lots more treasures :)