How can you use your voice when you have laryngitis?

Today is Friday and I can't miss work. I do a lot of my work on the phone. (Yikes.) If I can just make my voice keep working for one more day I can rest it over the weekend. Hot tea kind of helps, at least I can almost croak something out thats intelligible, but if I keep drinking this much hot tea all day I'll be floating away in a teabag by lunch. What else works?