Melocactus azureus Cactus Stiff narrow leaves with attractive

Stiff narrow leaves with attractive white markings

To get the degree of pink seen in the first image you probably need to keep it on the dry side as a bit of drought stress brings out the most stunning color

Parodia concinna  Also known as Notocactus

Ceropegia stapeliiformis  This species has thick green to brown stems

Care is more similar to a succulent too

Melocactus azureus Cactus Stiff narrow leaves with attractiveMelocactus azureus Family: Cactaceae. This is a nice cephallium forming cactus with blue to blue green skin. It looks and grows like a normal cactus for several years but once it gets big enough the main plant stops growing but produces a large hairy inflorescence that continues to grow for the rest of the life of the plant. Eventually the inflorescence can be taller than the plant itself. This is more tropical than most cacti so it doesn't like cold