I am a rabid composter. My local coffee shop gets some tomatoes in exchange for all the coffee grounds, paper filters and tea bags they save for me. Such a deal. I also use a paper shredder for all of my junk mail (I don't do the glossy stuff and give the plastic-windowed envelopes a miss). Grass clippings are great for getting the pile to heat up. And I pick up truck loads of leaves from the neighboring city's green waste area; they're nice enough to load them in for me.
I also have old food-grade 50 gallon barrels under the water spouts and use that water until it's gone for just about everything.
I'm bad about seeds, but have successfully propagated a lot of things. My new variegated hydrangea *somehow* got mowed - the bush will live, thankfully, and I've potted up a few of the casualties, so now I have a few, yay!
Cardboard boxes without pictures are used around plants before putting mulch down.
Old cups with broken handles are used to water root coleus and other stuff that will root that way.
Um, um - there's more, I just can't think of it at this time.
