The --self-extracting flag in deno compile --self-extracting looks awesome.
I could compile my 11ty stack into a single executable that I could send anywhere, but it would still be able to read external markdowns so semi-technical coworkers can make content changes without the maintenance overhead of a CMS and without the coworkers needing to learn modern web dev.
It would also be super awesome for all the internal tools I've built that need to run offline.