The scala scripting is an oft-overlooked feature, and I think it's pretty great. You can compile your codebase into a jar, upload it to a server and link to it from a script in Scala you're editing there in a console text editor. Advantages:

- no compilation required, while still maintaing static typing checks

- since the script is the same Scala language as your main codebase, you can copy/paste code snippets into script for increased productivity

From my experience, it's been great for one-off data processing jobs done on the server.