The hardware side of this project has been done in different ways by a number of individuals (even Hackaday's Sophi Kravitz). I have made a few changes, though):

• Pulling the TGAM1 Board from the Mindwave Headset
• changing the electrode so that different recording sites can be used
• separate, smaller, enclosure for the TGAM1 Board and the Bluetooth module
• separate battery pack (with power switch, low dropout voltage regulator)that has a lead to plug into the enclosure for the TGAM1 board

I initially began this project just before the new year, and posted a few entries on my progress at LearnByMaking.