I am not an employer (or rather I employ a carer for my mother, where retention is my absolute focus as recruitment is a nightmare), but would imagine that employers are looking for evidence of the wider skill sets that they need, depending on the job.
DD has always done a lot, though no music. Looking back the things that have probably given her the most resilience and maturity have been sport and a ski season.
Sport was brilliant. In year eleven she was involved in two sports at county/regional level which meant 20 hours of training outside school each week and then competition and matches. Time management, coping with failure/loss, listening to instructions, working in a team.
The ski season was equally good. She was an underpaid and exploited skivvy. The management was awful, and several colleagues did not pull their weight and were sent home. Some guests were very demanding, expecting 5* service for a budget price. But it was brilliant. She saw it through to the end, can make a bed or whip up a meal in double quick time, and has learnt how to work with others, how not to sweat the small stuff but also stick up for herself politely when things are unacceptable. And she and her friends had fun, and perfected their 360s.
I suspect, though Count can correct, that it is not just about what you do (MC box ticking), but what employability skills you can claim to have got from any experience.