This planter is full of sedum. There are a lot of different sedum great for mini gardening.
They do not need much water so they are easy plants to care for .
Some of the types shown here are :
Dragons blood
Blue spruce stonecrop
Tri- color stonecrop
Baby tears stonecrop

Hen and chicks also make a great small garden plant
This one is called cobweb

Another hen n chick
There are so many to choose from in lots of colors.

Another great sedum
wish I could remember the name of this one.
It must bee contained or it will take over the world

I'm thinking I need to start growing sedum LOL they seem alot easier to care for than stuff I have in my gardens now.but then I've been known to do things the difficult/hard way all my life LOL