Evan - Very nice. I have some small caladiums, too, that I had not thought of using in a miniature garden. Thanks for sharing your idea!
I have a question ....
If you grow plant starts or offsets in very small containers, does that dwarf them? I am thinking of planting some plants (that get a little bit bigger than what I consider miniature) in small pots to restrict their growth. (I have done that with waterlilies and it has worked.) And then plant the plant with pot into a miniature scene. So like a pot in a pot scenerio. What do you think? Could plants be kept small this way?