There's a catalog of Hokie merchandise we get a few times a year, I think from the bookstore that has pieces that can be used to decorate gardens, as door stops, and as desk items. But they're about $100+ depending on size and engraving.
Saltpeter is the common name used for several different chemical compounds, specifically for potassium nitrate and sodium nitrate. Potassium nitrate is commonly used in gunpowder, and sodium nitrate is found in fertilizers and explosives.
What do you think epsom salt is for? You take a bath in it! The delivery of magnesium is through an aqueous solution e.g. your bath water! This is what epsom salt was designed to do. You can create a super saturated solution of water and epsom salt if you like for the delivery of magnesium.