Here’s another experiment in creating a practical Pulse setup, using a fully populated JeeNode:

The PWR/I2C and ISP/SPI connectors use wire-wrap pins mounted the other way:

Here are four “peripheral boards”, ready to add all sorts of sensors:

They look a bit like feet, ha ha:

The nice bit is that since each of the boards uses one port and all ports are identical, it is very easy to use various sensor configurations.
Here’s the “carrier board”, mounted on part of the enclosure:

All the pieces fit together nicely, of course:

And lastly, the protective shell:

Case closed… heh :)