Literally anything innovative.
Laziness is the root of all invention.
We didn't invent the wheel because it allowed us to work more- we invented it because it was easier than carrying the same load before.
Computers? we invented the abacus because counting that much on hands is difficult. Easier to use an abacus. and computers were just one more step along that journey. Sure... it enables very much more complex math...
... computer modeling/simulation? invented because it's less work than building physical models and testing that way. (especially if you consider expenses as being a measure of other kinds of work- like fund raising.)
there's very few things that were innovative, that weren't ultimately developed because somebody had an idea for easing workloads.