These images are links to better quality ones if needed!
Aylostera carminifilimentosa Rebutia perplexa Aporocactus flagelliformisa
Aylostera carminifilamentosaRebutia perplexaAporocactus flagelliformis
Weingartia trollii Mammillaria haageana Parodia maairaniana
Weingartia trolliiMammillaria haageanaParodia maairaniana
Epiphyllum 'Dreamland' Mediolobivia eos Sulcorebutia canigueralii
Epiphyllum 'Dreamland' Echinocereus scheerii v. gentryiSulcorebutia canigueralii

Don't be taken in by old tales of Cacti only flowering every 7 years,once mature and flowering they should do so every year! Or of them growing in Sahara like conditions, most grow on meadow and pasture land. Others on mountain sides, in rocky outcrops and the hot steamy tropical rain forest of South America. Very simple rules!!as much sun as possible all the year round, April till September a good water every week. October till March NO WATER at all, keep cool but frost free.