Put your Ardweeny onto a prototyping shield, and add regular shields to it!
What? You want to use an Ardweeny with more prototyping area? Heresy! Absurd? Um... hey, that's not bad.... The Wicked Device's Ardweeny Shield has all the pins brought out to easy-access places, and it includes two onboard LEDs and a switch, already connected to ground.
On top of the full prototyping shield kit, you also get long-pin dual headers, and a mini breadboard. Detailed step by step assembly instructions are online at shield.wickeddevice.com.
Here's what it lets you do:
Kit does not include the Ardweeny - this is just the prototyping shield.