Stylus pens are a coveted item for people who have touchscreen devices. They help preserve the screen and help people who have large fingers be able to have more accuracy when texting and selecting things on the small screen. The stylus pen is not expensive, but if you didn't have any money to spare, you could make one.
Supplies:
What you will need can be found around your home.
Steps:
Where does one get the conductive rubber you speak of?
Just buy a stylus pen at the Dollar Tree.
It does kind of seem like a lot of trouble, though clever. You can get a stylus at Dollar Tree, and I can't visualize a scenario where it would be this much of an emergency to have one.