The best replacement for pen is pencil.

The best alternatives to pen are rated as following:
★★★★★  pencil
★★★★  sword
★★★★  pin
★  ballpoint
★  pet
★  rollerball
★  omd
  syringe
  nex
  crate for puppy
  strength
  pencil taking notes
  nikon 1
  sony nex
  vial
  e cig
  pin pronunciation
  ballpoint pen
  ad rune
  ap
  attack damage
  pencil notes
  calligraphy pen
  cage
  crate
  stylus
  trippy stick
  micro g
  ink

Your alternative for pen is not listed? Suggest!
Speaking about pen, one probably shouldn't forget about stylus.

Other search terms related to pen and their ratings are:
★★★★★ stylus
★★ tablet
★★ flash drive
★★ highlighter
★ light and stylus
★ lanyard
★ laser pointer
★ laser
whiteout
feather
You have in mind a companion for pen and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of pen in all years. Click on graph for more.
pen
pencil
sword