Once, my friend lost her wallet with all her important cards and money. I helped her retrace her steps and we searched everywhere. When we couldn't find it, I lent her some money so she could get by until she could replace her cards. This showed that we could rely on each other in difficult times, which is a great aspect of friendship.
Sure. There was a time when my friend was preparing for an important exam but she was really stressed out. I decided to make her a study schedule and we studied together every day. I also brought her some healthy snacks to keep her energy up. In the end, she did really well on the exam and our friendship grew stronger because of that shared experience.