lens
Traditional magnifying glass lenses are glass, which is very economical, but slightly bulky. The more valuable ones can be rare ores, such as rubies, black gemstones, sapphires, agates, pink crystals, etc. More alternative and creative can be: water, that is, water lenses
Mirror handle
As long as it is solid, almost all can be used as raw materials for mirror handles, such as: glass, plastic, metal (gold, silver, copper, iron, tin...). Yes, but the price varies), wood, shells, cardboard.