In the course of making models and doing tests for our clients we regularly had to source or design and build tools, instruments, modules and parts that we think could have wider use. So engage in some intellectual recycling to save yourself some time and re-use our design work.
You can also buy some tools, instruments, modules, PCBs, parts and kits from us - have a look at our offering at the mju-tec website.
The AVRUSBKey (AT90USBKey) is a convenient demonstration/prototyping board based on the Atmel AT90USB1287 microcontroller. What's not so convenient is that the AVR's port pins are brought out on 0.05" pitch headers. We've made a base board (at 90mm x 50mm only slightly larger then the USBKey itself) onto which you can plug or solder the USBKey, bringing out all pins on 0.1" pitch header. It also has 4 mounting holes.
For one project we needed to connect the microSD- socket on an evaluation board to a "full-size" SD-card socket in our product demonstrator. This little PCB takes the place of a microSD card and brings out the 8 pins of the socket on a 0.05"/1.27mm pitch - you can either use a MicroMatch socket or solder flatcable directly to the pads.