I read an article* about ARM using imprint lithography to create a working Cortex M0 microcontroller. Feature size is equivalent to a 2 um process (which was achieved about 30 years ago in silicon), but it still seems pretty exciting - I could find use-cases for something like that in my own day-to-day hardware projects if hobbyists ever find a way to recreate these kind of machines for cheap (much like the DIY CNC machine & 3d printing scene has done)

* https://semiaccurate.com/2015/11/18/arm-charts-path-printed-...