While most people probably use PROT and NEUT for bombs or lasers, I instead made a model of an atom's nucleus with them. I then went and made a nucleus for every element on the periodic table, resulting in this:

Each element is represented by a model containing the exact number of protons and neutrons for the element's most stable or most common isotope.

However, I did not label the elements, because I did not have enough space between the elements to make the letters needed, and there is a sign limit which prevents me from adding enough signs to label everything.