Tactile Detector Prototype

I intend to investigate sense of touch as a starting point of my project.
To build a detector for tactile, I need portable battery and microchips light/small enough to be held by hand. The flowing components is for considerations:

CR2032 battery To order

CR2032 battery holder

Conductive Fabric and threadlessemf

Solution for making fabric switch http://www.cs.colorado.edu/~buechley/diy/diy_e_sewing.html
Solution for sewing togher lithium battery. http://www.cs.colorado.edu/~buechley/diy/diy_e_sewing_old.html