Did you do a double take? These Lithops, or Living Stones, may not look that planty, but they're living breathing succulents found in desert environments. Since they've adapted naturally to harsh conditions, they can be pretty easy if you have the right space! Native to South Africa.
Lithops like 5-6 hours of direct sun in the morning, and like to take a break in some afternoon shade. TOO much direct sun or too hot of sun can burn them, but they're pretty resilient. Only water when the soil is completely dry - overwatering can stunt their growth. When they're growing new leaves (usually during the winter), it's best to leave them be and wait to water until their outer leaves die in the spring.
These Lithops are small (but mighty!) and come in 2" pots.