Bought a cup, useless

We're all human, I have done things like this before. I will not return home from shopping if I have not purchased soemthing so I have often bought things like cups plates and pther dishes as well as throw pillows or blankets that are not too much money but I never really needed in the first place. I am so distracted making sure I have a wastless shopping trip that I end up wasting money inb the process.