Wireless! Applications and Suggestions

Good afternoon!
I'm the IT director, so not into the instructional side so much. I'm asking for help for my teachers.
I have just received funding to make portions of my school campuses wireless. I have the ability to give guest access to the Internet and secure access to students and faculty.
What I'd like is suggestions on how to use wireless either in the classroom or in common areas using laptops, pdas, etc., to enhance instruction/learning. Like I said, I'm from the technology side and am searching for a way to make this a great surprise for the teachers and kids when they get back, but I need suggestions so they'll use it rather than letting it sit idle.
Thanks in advance for all your help.