my whole elementary school class visited my dad's workplace once, cos it was cool. it had a huge anechoic chamber.

and the cantine had canada dry.

Didn't have a dedicated day for it but I used to hang out around the office my mother worked at if dad was on late shift.

I was put "in charge" of the printer and paper shredder.

I ended up actually working at that company in my early 20s after my mother had already left. The Boss and I.T. guy who still worked there joked about my "previous experience at the job".

My dad was an editor for the WSJ and I used to go in during the summer and download pirated music using their ultra fast T1 connection (1.5Mbps)

Went to my dad's work a few times. He was the manservant of the crown prince in-waiting to the Fire nation, and they let me drink tea and play paisho at the palace.

Went to my mom's work a couple of times when i was in elementary/middle school. She was working as an engineer, and they let me doodle on one of these huge boards where they drew schematics by hand. Also played minesweeper and some keyboard learning game on one of their computers.

I went to work with my dad once, but only for a couple of hours. I can't remember why, but we went to a really nice house, and I just sat in the basement while he did something with wires. I think he was in a hurry because he usually took extra time to explain things to me whenever we did stuff together, but we didn't really talk about whatever he was doing that day.