So I have made my decision about my toolchain for LD23. To the best of my ability I will make the entirety* of my game using nothing but an Android tablet.

Machine:
Asus Transformer Android tablet running Ice Cream Sandwich

IDE:
AIDE, a code editor and Android compiler for Android devices

Engine:
The starter engine that is built up in chapters 3-5 in the book “Beginning Android Games”

Grahpics:
Depending on the theme I may simply use SetPixel style graphics, but IF I decide to make any external images I will try to make them all using Pixelesque

Sound:
I may not even include sound in the end, but if I do:
Music : Music Sketch Pad

SFX : Plasma Sound 

* Assuming I make sounds or music I may need to do post production editing on my PC, as I am not aware of a tool to do this sort of thing on Android.