Speaking of everyday objects 民具と言えば

Speaking of everyday objects, at first I couldn’t figure out what these wood blocks  were used for. Located just outside the temple precincts of Eiheiji Temple in Fukui prefecture was a restaurant for temple visitors/tourists. On the brick facade facing out to the parking lot were these neatly displayed blocks. On the day in November when I visited, there were only a handful of tourists who had made the trip to the temple. And the restaurant was all but empty. So what were these blocks for?  As there were no tourist buses on that day, it was difficult for me to make the connection at first. Answer: homemade wheel chocks.