Found this on  A cactus/succulent dish garden!

Cactus Dish Garden - miniature desert landscape of assorted cacti and succulents. Looks like my cactus dish at home

"living stones"

Living stones, (Lithops), are unusual succulents that look like small, rounded stones. Also called flowering stones or pebble plants, they can live up to 50 years and rarely need to be repotted. Stunning daisy-like blooms appear in November and December.

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