Reusing Lightbulbs: as planters or mini terrariums

Hollowing the light bulb:
There are several instructables that had covered this already, although I first saw it in this site: DIY Hollow Out A Light Bulb , a very good step by step instructions in how to gutted out the bulb, (and also how to used for tester vessels for boil water and some other uses).
Here is another instructable about "How to hollow out a lightbulb and make a stand for it , pretty neat too.
and here a bunch of instructables more about light bulb uses an related stuff . Enjoy
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It's just that around here, if I simply lay those lightbulbs on aluminium rings from hard drive they are very prone to be hit and thus very prone to be destroyed. OK, my suggestion doesn't totally guarantee that it won't be destroyed accidentally (perhaps I should switch to a safer environment ...).
Many of our coins are ferromagnetic, in fact my portable change holder is just a chunk of neodynium. The only thing that doesn't stick is 5 cents.
So yea, be canadian for it to work :D
Or go get some canadian quarter!
(You get the idea.)
Now as a side note, this seems like a great little project and I'm a big fan of recycling during crafts. Now I just need to wait for one of my bulbs to go. Unfortunately I'm systematically replacing all the bulbs in my house with the energysaving kind. I've yet to find a craft that reuses them when they go. :-P
Thank you!
Just rub the letters with an expo white board marker until the letters dissappear, then simply rub the marker off with your fingers. I found this out by accident when I was in 4th grade and have been using expo markers to remove unwanted marks from all sorts of things.
Follow first the instructions in how to open the bulb.
You must clean the inside of the bulb (usually bulbs had a white powder inside) be careful when you open, clean it with water and dry it with a paper towel.
For the terrarium I just used sand and/or planting soil for the base, drop a little inside of the bulb in a horizontal position, no to much (1/4" or so), since the moss has a layer of soil itself, and it needs to be a little moist so it wont move.
I found the moss in my backyard, pretty easy, look for dark or humid places around the backyard or if you go for a hike to the any park, it will be easy to find some different kinds of moss, just be respectful of the environment.
To put the moss inside the bulb split little pieces of the the moss "carpet" , small enough to fit the opening, I use a pair of tweezers and also chop sticks to set the pieces in place.
Keep it humid after finishing and I think, depending of the conditions, you might need to water once a week just a tiny bit of water, you will see some condensation inside the bulb, which is normal.
I use a ring (from a discarded hard drive) as base, be creative and resourceful.
I hope it helps, and good luck.
The Earth itself can be seen as a sealed biosphere (a rather large one).
By the way, I am not sure but .. isn't this cycle reversed at night? At night, doesn't the plant consume carbon oxyde and release oxygen?
I thought a terrarium was supposed to be sealed to keep the water in. To compensate for the C02 you could probably throw in a snail or something to make some.
Just like this.