The app All My Things can help you organize all your things in categories, register to whom you lent out your things, which moving boxes you put your books in etc. By using QR codes and pictures you can easily register and find your things again. In the app you have an overview of all your registered things, the things you lent out and the things you borrowed from others.
Through the app you can also contact the person who borrowed your things and ask them to deliver it back.
So look no more - the app All My Things will help you find all your things!