It's usually around $80-100 for a dinner for two (not the fast food joints, mind you) in the country I'm at. So I usually tip 0.002-0.003.

For the past few months, I've started giving away Bitcoin as tips. Being in a country where Bitcoin awareness is not that high, I had to make a short instruction manual in order for the people to actually know how to receive them. The manual is the size of the smallest bill for the country I am currently at. I give it out to different nationalities (Indians, Pakistan, Bangladesh, Filipino, Egyptians, Syrians, etc!) I'll probably make a translation to different languages later on.

Just a brief background, I currently work in a foreign country where tips are not actually added to the invoice. So I usually give them a small amount in fiat and hand this over to them.

Hopefully this will help raise awareness to countries where Bitcoin is not that popular!
https://imgur.com/a/2dYyj