Rare earth/tech metals

 https://www.cummins.com/news/2021/04/19/what-are-tech-metals-and-rare-earth-elements-and-how-are-they-used

https://www.escatec.com/blog/rare-earth-elements-electronics-manufacturing

• Cerium is used in light bulbs, TVs and ovens.
• Dysprosium is mixed within alloys used in wind turbines, electric vehicles and nuclear reactors.
• Erbium is used in lasers and fiber optic cables.
• Europium is used in light bulbs, nuclear reactors and lasers.
• Gadolinium is used in magnets, nuclear reactors and magnetic resonance imaging (MRI).
• Holmium is used in magnets and nuclear reactors.
• Lanthanum is mixed within alloys that are used in batteries and hydrogen vehicles.
• Lutetium is used as a catalyst in refineries.
• Neodymium is used in magnets and lasers.
• Praseodymium is used in aircraft engines, fiber optic cables and magnets.
• Promethium is used in pacemakers and guided missiles.
• Samarium is used in microwave devices and magnets.
• Terbium is used in light bulbs, memory devices and x-rays. 
• Thulium is used in lasers.
• Ytterbium is used in displays, x-ray machines and fiber-optic cables.
• Yttrium is used in radars and as an additive within alloys used in high tech devices.
• Scandium is used for fuel cells and alloys used in jet planes.
• Cobalt is used in super-alloys, jet turbines and rechargeable batteries.
• Lithium is commonly used in batteries.
• Tantalum is used in capacitors, resistors and other electronic equipment.
• Indium is often used in LCD screens.
• Gallium is used in integrated circuits, LEDs and semiconductors.
• Niobium is used in steel alloys that are a part of jet engines and rockets.
• Selenium is used in photocells and rectifiers.
• Zirconium is used in nuclear power stations.