Quick mods for the S-Pen for the Samsung Galaxy Note 10.1 and Note 2.
Note 2 S-Pen mod, inside of a Pentel Clic eraser
Either one of these work on the other, but I recommend using the plastic tip for the 10.1, as the rubberized tip feels a bit too grippy, and result is a little lost of pressure sensitivity on the low end. The 10.1 S-Pen actually is a bit easier to get to the heavy pressure side, whereas the Note 2's pen requires a heavier hand to get to the extreme pressure levels. Both work great though, and it doesn't take very long to get used to either of the pens.
All Wacom Penabled pen/stylus work with the Note devices. "Penabled"are the ones for the Tablet PC's, not the Cintiq or normal Wacom tablets. However, the Penabled pen's tip are several millimeters off from the actual drawing tip, when used on either the Note 10.1, or the Note 2, so you are better off using the stock S-Pens with the Note devices.
And as a side note, the Note 1's S Pen adaptor does NOT work well for drawing on the Note 2 S-Pen. They DO work, but the pressure levels are different, so that you can only get light lines when using the Note 1 S-Pen on the Note 2 or Note 10.1 screens. This may work ok for writing, or note taking, but for art it is virtually useless. The original Note's S Pen holder also does not fit the Note 2's slightly bigger S-Pen.
So... why did I spend all this energy and effort to make these pens more comfortable to hold? Because they are my favorite digital art devices at the moment, see my Digital Art Tools review.... plus I think unicorns poop rainbows everytime I sketch with them.