100 words of ideas on what you would bring when traveling alone

First of all, you must bring money and cards, then a mobile phone and charger, a camera, and a notebook if convenient. Depending on the place and distance you want to go, you can decide to bring one or two sets of replacement clothes. , I am used to bringing my own personal items, towels, toothbrushes, etc. If I go to the south, such as Yunnan and Hainan, I must bring sunscreen.