This isn't exactly dollhouse, but it sure is dollar. I'm still working on Wolverine; I can't seem to cut his legs off... but that could be the healing factor.
I wish the picture was better quality. The guy inside is a little old man with a cane who I painted with a safety pin.
But I will tell you how to hollow out a lightbulb! Use pliers to take off the little metal thingy on the end of the bulb. You'll be stuck with a thick black glass plug with a hole in the middle of it. This threw me for a loop for a good long while. I tried to hit it with something heavy and metal to shatter it, but it was really hard and it just flaked off bit by bit. Then I stuck a dart in the hole and pushed it to the side, and it cracked right in half! Then it's just a question of breaking up the glass inside and shaking it out.
At the bottom of terrariums you should put activated charcoal or those clay balls they put at the bottom of lizard habitats. Then there's mesh, not metal mesh (which will rust), but fiberglass. Then the dirt and the plant.