May not be your goal, but I specifically wanted to get more life out of a Windows 8 tablet sans keyboard. I had a good time experimenting with the x86 port of Android, and it was a surprisingly smooth process.
At the end of the day, it was indeed quick enough for some basic browsing, but anything with video was horrendous despite the drivers working fine (this was a system with Intel Atom and 2GB RAM).
Much love for these teachers. They are not paid nearly enough. I hate the corporate pizza party, but not the public school one.
Edit: I wonder if the difference in financial burden between a corporate pizza party and a public school one is a good metric