How can I properly thank my neighbour for plowing my driveway?

I live in rural canada. We get a ton of snow here and often I don't have time to plow my 700' long driveway. I have 2 kids under 2, 2 jobs and my gf travels for work often so I'm alone with the kids for a week at a time sometimes.

Often times i'll just drive through a foot of snow and plow it when I get a chance after the kids to bed. My neighbour almost always plows it before I get a moment. Its a big job and paying somebody to do it costs a lot of money.

How can I properly thank this neighbor? I dont know him very well. I never asked him to do it, but I really appreciate that he does!