Are the Arduino boards not quite up to your latest project? Maybe you should take a look at the Illuminato, a 100% Free Hardware / Open Hardware Arduino clone. The Illuminato has 40 I/O pins, 64k code space, and everything from schematics to board layout is released under the GPL. You can buy a few or download the specs and manufacture a million of them. We heard about the Illumanto from a recent post in the Electronic Lab blog. Another interesting feature of the Illuminato project is that it's being financed by the Open Source Hardware Bank, a community funding system (AKA microcredit coop or P2P lending system, full explanation) that pays a small return to community members willing to put up money to fund Free/Open Hardware projects. For more see the Liquidware blog (and their and their recent update), or the Makezine article.