Love finding a good use-case of parallel as an easy way to gain massive time savings, especially on the modern high-threaded CPUs of today. Most recently found it useful when batch-compressing large jpeg images to smaller webp files, via use with find and ImageMagick:

   find ./ -type f -iname '*.jpg' -size +1M -print0 | parallel -0 mogrify -format webp -quality 80 {}