Yeah, you can find Testsets on ebay for not a lot of money. Generally a real "Butt Set" can take a nice beating and keep coming back for more.
Beige boxes are pretty much the only Boxes that actually do work these days, and probably will until we decide to tear up all the analog wire pairs. Be really careful with what you read, as a lot of it is totally wrong at this stage of the game. VOIP is an exciting field as well as cell phones and digital switching.
Just don't try blowing some tone in your nearest pay fone.
"Remember how much fun you had shooting spitwads at the teacher in seventh grade? Imagine applying that kind of attitude to actually fucking with Mitsubishi!"
- Jello Biafra