I also found this Ball jar that's older than I am, for a quarter.
I've been planning to make some terrariums for awhile and I thought these would be perfect. I went all around, getting my supplies and picked out small plants that I thought would be suitable. After I began my layering, I quickly realized that the containers were going to be too small and I wouldn't be able to get the lids on. I'm doing this in my kitchen so I don't really want to leave everything and go look for more containers. Also, that kinda defeats the purpose of trying to be thrifty. In the end, I managed to make two enclosed terrariums with only a little Irish moss in them. And one open terrarium (I used a glass bowl from the coffee table that was holding potpourri). The others, I decided to treat as flower pots. I do like the way they all turned out, but I'm a little disappointed that I didn't get the full look I was going for.
Here they are.
Here's the one in the glass bowl.
And the baby got marbles.
If you're insterested in making your own terrarium, go here.
Of course, Martha has some info too.