"I can chew on this piece, it goes inside and no one will see it, but if someone steals my pen, I can dramatically reveal the interior chewed piece and reclaim my property while everyone cheers for me and I'm finally accepted in the office as an equal."
With some pens, you can jam the spring between the button and the silver thing on the bottom right and the white thing next to it. Then jam it into the top of the pen with the ink stick until it sticks.
Then press the button on the top of the pen and the white thing shoots across the room.
I'm secretly very glad when my son breaks one of his toys so I can take the whole thing apart. Children's trucks with pull and release and worm gears are very complex!
I have good quality integrated pen. No mechanical spring, no button. Just like smartphone. Everything is glued together. Two pieces only: pen and cover only.
(no you can't replace the ink when it's empty. throw the whole pen away and buy a new one. but is ok, as it costs 0.30€ in total each.)
Gotta make sure the tech inside is as we know it should be. Can’t have them sneaking in some District 9 alien shit. The prawns’ll do anything for the dog food. Anything.