These Plant Terrarium pictures will show you some examples and give you some good ideas for your own terrarium.
Here's a glass pear shaped plant terrarium.
Here's an eclectic indoor plant terrarium with a wooden frame.
Here's a plant terrarium hanging ornament.
DIY plant terrariums can be made out of practically any type of glass vessel.
Here's a tiny plant terrarium made out of a light bulb.
Here's an open plant terrarium with moss.
Plant terrariums are easy to make using very common house plants like these.