I will use them as walkie talkies ... and/or stereo camera :-)
i think i am going to wire it to a mains plug sticking out back cover and use it like a sheeva plug. Motion detection, camera and sound recording. Coupled with an Ir repeater, could be fun as a web controlled tv stereo etc remote. could also maybe install in an electrical box on wall and use as a sip video door phone. also might use one at work for Bluetooth proximity advertising or some other Bluetooth proximity hack(i already have a relay controlled door strike on so maybe just add a might lead) also thought to maybe wire one into car permanently for tunes and GPS etc. wish i had more time for projects, really with such a tiny linux box with gsm, WiFi, Bluetooth, infrared,fmtxrx usb, av out, camera, mic, GPS, the fun little appliance possibilities are endless
If you had any sense you'll only use one and keep the other as a spare.