In our culture it is customary to display whatever proof of achievement that you have. It may be a medal or certificate but best if you have a trophy or plaque. They are the usual displays in the living room as a way of showing off.
I only have 1 plaque in my life which was given to me by the organization that handled a musical competition. My song was finalist in that songwriting competition for which I had won some money. Unfortunately my wife had broken that plaque which was made of glass when she was cleaning it.
Glad you received this honor!