I bought concert tickets and a friend paid me for one of them. I need help moving and my friend let me use her zipcar membership. I venmo'd her money for the co

I bought concert tickets and a friend paid me for one of them. I need help moving and my friend let me use her zipcar membership. I venmo'd her money for the cost of the van. A few friends and I wanted to send flowers to a friend who had a baby. One person bought them and charged us each the split amount. etc.