So, I have this brick ...
It has 24 holes piercing it, right through, each hole about 3/4" x 1". The brick is about 6" deep, so that's how deep each hole is.
I was thinking it would be neat to set the brick in a corner of one of my flowerbeds and plant some tiny plant in each hole. I could set it in sun or shade. Moisture is not an issue and I could fill the holes with whatever kind of soil is most desirable (and even dig out a little hole and fill it with more of that soil, then set the brick on top of it so that roots can continue down into it).
What kind of easy-to-grow, easy-to find plant would do well in tiny pockets like this?