Ferrite magnets are composed of barrium/strontium carbonate and iron oxide. They usually appear in discs, rings, blocks etc
Neodymium magnets are composed of neodymium, iron, boron and a few transition needs.
Samarium cobalt magnets are composed of samarium, cobalt, iron etc
Alnico magnets are primarily from aluminium, nickel, cobalt, copper, iron and sometimes titanium.
Flexible magnets are used for advertising and promotional needs. These are available in sheets, rolls, strips etc.
Educational magnets bring school and science project to life.
Toy magnets include magnetic wands, marbles, cow magnets and promotional magnets.
Magnets used for industrial uses like holding magnets, sweepers etc come under magnetic assemblies
Instruments are used to magnetize to measure the strength of magnets etc