Nothing super particular at this time, but generally:
In the past I've wanted to spin up something like ElasticSearch in a desktop or mobile app. I really love the SQLite model of a simple file. This type of just dealing with a file has grown in popularity recently. See [rqlite](https://github.com/rqlite/rqlite) and [HN:Consider SQLite](https://news.ycombinator.com/item?id=29727707)