Today I went treasure hunting for a small planter, and was in luck.
I picked up a little vase that was just the right size to turn into a planter for some philodendrons that I had rooted.
I put half an inch of aquarium gravel in the bottom.
Then I took the plants I had rooted and arranged them in the container. I filled in around them with potting soil.
I topped it off with more gravel to keep down the mold, and soaked the soil.
Now all I have left to do is find the right spot to put it!