Prospective employers and clients often ask "Show us your work" ... and I can sometimes show them the end product if it's a public website but if it's a CD-ROM, touchscreen kiosk application, intranet or software I really can't except maybe screen captures ... which really just showcases the graphic designer's capabilities rather than mine - it can be hard to look past the colours and pretty images to see the underlying skeleton, structure and deliberate, consistent approach to interaction design.
So I'm trying to start collecting artefacts I create during the design process such as this sketch above of an interface for a touchscreen application - you would never see something this messy in a UI spec or report but it's an important part of the iterative design and prototyping process in order to come up with a better solution.
My "toolkit" consists of an A5 Quill spiral-bound cartridge paper pad and the following pens:
* Copic Multiliner, Brush, small, black
* Copic Multiliner, 1.0, black
* Rotring Tikky Graphic, 0.2, black
* Zig Millenium, 0.05, black
* Copic Multiliner, 0.05, black
* Stabilo Sensor, 0.3, blue
* Artline Drawing System, 0.3, black
* Uni-ball eye micro, red
* Copic Marker, Toner Gray, No. 1
* Sharpie, fine, black