Simple: Just a jar turned upside down
An idea to house a single small plant. Just use a cleaned jar turned upside down. If you don’t want to buy a small greenhouse, you can upcycle some jars. Provided you have really small pots or large jars. You could glue or screw the lid to a larger piece of wood and have an array of jar-greenhouses. Might also be a nice DIY idea for children.
Mediterranean Bonsai 