I found this glass dome at Goodwill for $2.50 and I had a lightbulb moment.
Images such as these ran through my head...
image from The Junior Society
image by eddieross.comWhen I got home I looked around to see what I could use as a base and there it was - the dog dish that I talked about in this post.
Disclaimer: its not really a dog dish, but a piece of 1960's vintage pottery that I found for $1. I have been using it for the puppies water. Not anymore.
I used one of my stemless wine glasses (from the 99 cent store) to plant my fern in. I have this fern outside that isn't doing well, so I took a piece of it from the root and gave it a new home. Hopefully it will thrive in its own little enviroment.
My $4.49 cloche terrarium.