I worked in a library as an assistant. So I re shelved books, looked up books, ordered books and did bookish things like issue and return books. etc
I have been asked/told to...
Write some ones CV
Fill in application forms
Find long lost contacts "her name was Jane Smith or Smite or something. what do you mean Google doesn't work like that?!!!!elventy!!!11"
Write a family tree (not mine)
Write a letter and post it, while they dictate over the phone.
Use my personal phone number so people could get g-mail accounts.
Set up hot mail and g-mail accounts for people
Book holidays/buy cars/ apply for job-seekers/get insurance
Pay bills and help people log in to there on line banking.

yes they hand me all their log in stuff pass words and everything.
Scan enlarge and clean up 12 word searches, then print and photo copy them. (a good 2 hours work)
All while the patron reads the paper etc.
"I am afraid that is not possible." was my mantra.