The second soldering project was a set of three JeeNodes I bought to start working on doing some home automation projects. These assembly instructions were very good (though not *quite* as detailed as Lady Ada's typical instructions). Everything went together smoothly, even the surface mount radio component that I was a little worried about.
I then ran the motor shield and all three JeeNodes through some tests to makes sure I had assembled them correctly. I walked through the JeeNode tests here. It was really handy that all of the JeeNodes were pre-flashed with the RF12demo sketch which acts as a basic configuration and send and receive utility, which makes doing basic RF check out very simple. Luckily everything worked on the first try.
Onward towards automating my house!