Make the desktop architecture like laptop with regards to Power Electronics. I think now RAM's consume lower power. So every Desktop can come with a Li-ion Backpack based on some standard. 10Ahr 12V Rechargeable Battery. The entire Motherboard works on the 12V DC supply that uses Float Charging from mains.
These are types of the Chumby Mini Web Computer, it was a Web Widget App System with Touch Interface. Innovative System ahead of its time. It manifested in 2006 before the Touch Screen Tablet.
(the 2008 wayback link above is a clear indication that this chumby is grandfather of iPod Touch, iPad, iPhone, Android, Smartphones.)
Tablets and Slates based on OpenSource OS. Even OpenHardware Tablets. This is a collage of various blurbs of mine in my other pages.
Breakpoints may not serve the purpose fully, it may be easier to use Testpoints and incremental coding.
When we build Electronic Circuits with many Interacting Blocks or Modules, We put a small 5mm Tall Copper Pin in the PCB or a PAD without masking. This is a Test or Troubleshooting Point. This is where you can probe with a scope, dmm or logic analyzer.
I was forced to Invent again, this time it is a Gesture Tablet. Tweak and Squeeze the Air above Tablet. 3D input device for Pads and Tablets. - 2011
A Tablet built with four embedded but slightly tilted cameras in the four corners and a dedicated Input processor. This detects and interprets the 'finger gestures' to enhance the touch experience and also Sketch/Write with dummy stylus/brush.