ปากกาipad (http://th.iwhateverstylus.com)
ปากกา stylus (http://th.iwhateverstylus.com)
Homemade Stylus (http://www.iwhateverstylus.com)
how to make a stylus (http://www.instructables.com/id/How-to-Make-the-Best-Homemade-Stylus-Ever-Made/)