Never got a tip. Mostly cause my clients are commercial/condominiums.
Got a can of pop once. Oh, and a lot of dog poop that I skip...lol
I guess my best tip is I make on average 1.5 k after expenses a day on commercial mowing and renovations. Don't really need a tip with those numbers.
Usually, I reckon residential will give tips cause they know the lco is not making much and not getting rich quick...