When I purchased my Sony Clie handheld, I was quite happy about the ability to create scribbles/drawings. This method, I found, was much better than writing on paper and scanning because the result had fewer colors and all sorts of transformations – like rotation, conversion to B&W etc – were much easier. Also the results could be saved as GIF because it had fewer colours – with the additional benefit of having a transparent background.
This is a landscape scene that I drew back then:
Of course, the Clie is no longer working, and I am currently without a replacement. I do miss my Clie!