i made one with cacti so didn't cover it since don't want extra moisture
made one with a little cottage scene and woodland plants (i also posted about it in the tiny garden section )
and one in a tall vase with a taller plant -a young elephant ear type (arrow plant?)
i was looking thru old magazines and found another idea --a beach scene-- a crockery type bowl-it was blue and the top layer was sand--they had a peice of drift wood and sea shell and a little patch of grass -the tall wispy yellow beach type grass--very pretty
and i maybe will think on a zen garden scene some time too-anyone try that yet?