Tiding up for me means organizing your space so it's more efficient and conducive for your day. It can be anything from preparing for the next day the night before by laying out your clothes, put a glass of water by your bedside and also doing your to-list for the next day.
I always find myself tidying apps on my phone. Not just with their arrangement or stuff like that but I am always deleting apps I don’t find myself using and deleting old emails, drafts, notes, and text messages. I delete any conversation I won’t need to look at again later. I find this makes a big difference for my phone even though other people won’t see it.