Just used Mistral 7B running on my laptop during a flight to help me write some code for a little HTML and JavaScript prototype app - it made a ton of mistakes but still sped me up
Prompts were things like: "CSS to make a default table have borders between rows and look OK", and "JavaScript to use the DOMParser class to loop through tables in a string of HTML"
Quite surprised how useful it turned out to be! Like an alternative interface to JavaScript API docs I didn't have with me