One option is to orchestrate more agents across different repositories or projects at the same time, so there’s essentially less downtime while you’re waiting between tasks. But I really dislike that kind of constant context switching - it makes me feel a bit like Lucille Ball in that 1950s episode where she's wrapping chocolates [1].
I prefer to focus on a single project at a time. When I do hand something off to an LLM, I have three go‑to activities that I alternate between. I'll try to do some physical exercise (jumping jacks, pull-ups and push-ups), grab my violin/piano since both are less than a meter from my desk, or I'll study Japanese.