We do that after every sprint and it does work wonders. So 2 or 3 weeks sprint then a week of this, sprint again, a week on the list, which can also be features

We do that after every sprint and it does work wonders. So 2 or 3 weeks sprint then a week of this, sprint again, a week on the list, which can also be features - we maintain some 40 internal projects and not all projects get (or need) a sprint. I personally like it because the issues are more diverse and I get to pick. For example, my last task was something a colleague complained about in a reporting tool that was also bothering me and I also got to learn something new