Not really directly gaming related, but similar in nature. Sometimes it's good to have some fun ambient noise (for example for working and such).

I once tried reproducing noise that some games have for various spaceships cockpits / engine rooms. I ended up finding this ambient white noise generator for sox:

play -c2 -n synth whitenoise band -n 100 24 band -n 300 100 gain +20

But it's lacking additional beeps and buzzes that various computers usually produce. So, to take a shortcut you can just get different beeps from Star Trek

#!/bin/bash

wget -c http://www.trekcore.com/audio/computer/computer_work_beep.mp3 -O computerbeep_0.mp3
for ((i=1; i<=75; i++)); do wget -c http://www.trekcore.com/audio/computer/computerbeep_${i}.mp3; done

And then run this beeping script (in parallel with sox noise command above):
#!/bin/bash

beepsmax=75
sleepmax=${sleepmax:-"15"} # seconds

while true; do
   beep=$((RANDOM % beepsmax))
   sleeptime=$((RANDOM % sleepmax))

   mpv computerbeep_${beep}.mp3
   sleep $sleeptime
done

call it for example random_beep.sh and you can run it like:
sleepmax=20 ./random_beep.sh

sleepmax is by default 15 (maximum time between random beeps). You can set it to other time like above. Have fun :)