This one is a bit more involved, but can bring the community together in order to achieve. Introducing the greenhouse made recycled plastic bottles.

This is a great project that a lot of schools have already implemented, and it can serve as the basis for a lot of future project and learning. While it is very simple, it reuses a lot of plastic trash in a great way. There are several videos and design ideas out there for these, so I just found the tutorial for it that I liked best. I like the idea of having these made each year, letting each class create their own design and reaching out to the community for their plastic bottles and materials. This would allow the use of older greenhouses while expanding the overall area the greenhouses covered. Of course the first one would not have any space until it was finished, so maybe it could be made larger with more focus on the design.

Now that we have our compost bin, we need somewhere to put all of the soil we will be making. So here is a great idea for recycled planting pots.

These are simple and easy to mass produce, but still highly effective for getting plants started. This can also get parents, family, and businesses involved by having the students go around and collect the newspapers that would otherwise end up in the trash. These can also be made in different sizes, so they can be great as seed starters, or if made large enough they can be used to house adult plants. They can even be used to plant into a larger plot of soil as well, since if the rubber band is removed the newspaper will be able to break down and compost into the soil. Now if only we had a place to put our new planter pots filled with our compost soil. . .

I stumbled across a great project today while searching through Instructables. The first bin I found was pretty involved, but was a very professional looking compost bin.

There are several good pictures with easy to follow instructions, and several other users have completed the project. It requires some not as common tools and some difficult to set up hardware. If you are looking for an easier and more cost effective bin, I recommend the trash can compost bin.

This one is quite a bit easier to achieve, very simple and affordable, yet it is still just as effective as the more involved bin. While maybe not as pretty, this one would also be easier to reproduce and keep looking uniform. Both of these bins have been made by other users who have given some insight on the project as well. Of course, there are many more ideas out there for DIY compost bins, all you have to do is look for ones you like!