So I tried my beloved silicone earplugs. They stood up to the heat no problem (inside the constant shade of my box truck, anyhow), but, after day one, they didn't seal to my ears properly because of the dust. I switched to ones shaped like this:
which worked great all week.
When he lights his streetlamp, it is as if he brought one more star to life, or one flower.
When he puts out his lamp, he sends the flower, or the star, to sleep.
That is a beautiful occupation.
- Le Petit Prince, Antoine de Saint-Exupéry