For sure, any task or activity that is hard enough and just outside our reach, can get us into flow state. The trick is in ensuring that it is the right kind of hard, it is not too hard, and we time box the activity/task. If you think of how to beat the boss fight in a video game even when you are not playing it, it is the "right kind of hard". For me, beating the boss fights in Elden Ring were too hard, never got into flow state in that game :-)