Read more: Pencil machines were such a dopamine hit, I’d get so excited when a holographic one came out Here’s an interesting post from https://reddit.com/r/nostalgia/comments/1t34brl/pencil_machines_were_such_a_dopamine_hit_id_get/: Continue here: Pencil machines were such a dopamine hit, I’d get so excited when a holographic one came out