My jet-lagged head still whirrs in the deep night...

Beads, with all sorts of processing capabilities. Like rosary beads, but with the interior chock full of processing capabilities.

A different set of beads, smaller, on the surface layer of the fabric. Projecting light onto any surface ahead.

Beads, on a bracelet, detecting the muscular contractions and movements on the fingers as they type on the surface, or as they gesture. So you can sign whole letters and sentences without being restricted to a surface for fingers to type.

- Was just thinking about the possibilites of wearable computing and how that might look like. Not very imaginative, I admit.