The TOR proxy seems like a good idea for using a spare RPi. I wouldn't do it if its your only RPi though. Too much of a chance that you will just keep using it over and over. I was thinking of adding a second wireless adapter and making it a wireless-to-wireless proxy instead of a wireless-to-ethernet proxy. In fact I was also thinking of adding a second ethernet to allow a connection via a ethernet switch to the LAN side of the proxy. Then what I would have would be a wireless access port, with the capability of connecting either through a wireless adapter or ethernet on the WAN side and wireless and/or ethernet on the LAN side. I would also want to be able to use shorewall to manipulate the capabilities a little better. Although the Adafruit instructions create a nat firewall that is adequate, I would still like to have a finer resolution on what I will allow. I wonder if this would be a good fit for the 2x16 LCD screen with buttons from Adafruit that I have to be able to set up the correct connections from. Maybe something like this:
In addition, I could use CURL to access the internet through my companies Guest account. There is a Cisco Web Authentication component, hence the need for CURL to authenticate prior to connection. The connection would be something like:
OP=`curl -k -d "buttonClicked=4" -d "err_flag=0" -d "info_flag=0" -d "username=guestname" -d "password=guestpassword" https://wirelesssubdomain.mycompany.com/login.html`;
That would be a very useful item at work and at home. Hmmmm. I have to think some more about this.