Go here to check Makezine’s definitive guide to open source hardware projects in 2008.

Makezine writes:

“Each year we do a guide to all open source hardware and this year there are over 60 projects/kits – it’s incredible! Many are familiar with Arduino (now shipping over 60,000 units) but there are many other projects just as exciting and filled with amazing communities – we think we’ve captured nearly all of them in this list. Some of these projects and kits are available from MAKE others from the makers themselves or other hardware manufacturers – but since it’s open source hardware you can make any of these yourself, everything is available.

You can also call this guide… “The Open source hardware gift guide – The one and only, 3rd annual celebration of open source hardware!” – we think these are some of the best things to consider for the holidays and it supports an exciting development in hardware design.”