Ttabbal: Can I use a raspberry pi like a print queue where multiple people could use the interface to cue up jobs from their own computers? I have an older Pi sitting around, but would need to get a wireless usb card, and another SD card.
As a happy Octoprint user, the answer is yes, they can upload their .stl and/or .gcode for print but I wouldn’t recommend printing it immediately before the previous print has been removed. Octoprint has a perfect solution for this: you can attach a webcam to the Pi and point it at the bed so people can see if they can start the print.
mrvanes beat me to it! 
Yes, it allows everyone to use their own computer and just upload gcode to the RPi. I even printed a case for the Pi and camera module and mounted them to the side of my printer. I use wired ethernet, but as long as you get a USB wifi stick that is supported by Linux, it should work fine. There are a number of vendors that sell verified devices for the Pi, so it should be easy to find one online.