What To Do With Old DSL Modems?

RebornData asks: "Thanks to a move and continuing instability in the DSL market, I'm now the proud owner of three DSL modems of various types gathering dust in my closet. It's a sordid tale. While I know that obselete hardware is worth next to nothing, this hardware isn't necessarily obselete, with my most recent acquisition only getting two months of use (thanks to Northpoint's untimely demise). Is there a market for used consumer DSL modems? Some of these devices (like the Telocity Gateway) are more than dumb communications electronics- are there any cool hacks out there for them?" RebornData is surely not alone in this; I am now the (proud?) owner of an Efficient Networks, Inc SpeedStream modem, orphaned along with my old DSL provider. (Read on for more.)

"Details:

My tale of DSL woe: I was an early DSL customer in Houston, and had an ADSL line from PDQ.net for a year and a half using an Alcatel DSL modem (#1) before moving to Atlanta. In Atlanta, I signed up for PhoenixDSL which used Northpoint to provision an SDSL line for me using a 3com modem (#2). Then Phoenix's business was bought by Megapath, who then sold the consumer accounts like mine to Telocity.

I was migrated by Telocity two months ago, and they sent their own "Telocity Gateway" (#3). Of course, when Northpoint kicked the bucket, my Telocity connection went down. After four weeks of stringing me along (including promises to have me back up in three weeks), they've just informed me that they can't provide me service through an alternate provider, so I'm on my own and have yet another useless (?) DSL modem. Turns out that BellSouth is the only other DSL circuit provider in my CO and their DSLAM is full so they won't be able to service me until October at the earliest. AT&T's here installing a cable modem right now. So what can I do with all this DSL stuff? From what I've experiened, most DSL providers provide their own equipment, but is there a market for used modems? The Telocity gateway looks hackworthy... I remember reading somewhere that it runs Linux internally, and there are some interesting ports and markings on it (like "for use with X10 modules"). Has anyone torn into one of these things?"