Jar

I've always wanted to make a mini ecosystem. A few leaf beetles, some worms, dirt, a plant, rocks on the base, sprayed liberally with water, all put into an air and water-tight jar, and left in the sun. Theoretically, if the jar is truly air tight, it isn't disturbed, and the plant doesn't get too big, it should need absolutely nothing but sunlight.

The water, air and food should all recycle themselves indefinitely in the jar.

Sometimes I wish I could live in that little jar. The world crumbles away outside the glass, and the jar is floating in space with only the sun shining down on it.