Recycle, Recycle!
If everyone in America separated the paper, plastic, glass and aluminum products from the trash and tossed them in the recycling bin, we could decrease the amount of waste sent to landfills by 75%. Currently, it takes an area the size of PA to dump all our waste each year.
Reuse
Think of new ways to reuse every day household items, rather that just throwing them in the trash. Use cloth napkins and towels rather that paper towels; use refillable pens and pencils; use rechargeable batteries. Donate reusable items to a thrift store (Women In Need or Nearly New); get together with your neighbors and have a yard sale (make some cash!); advertise your stuff on freecycle.org or ebay.
Keeping stuff out of landfills (or worse, roadside ditches) is good sense. See what happens to our land when we throw stuff away: www.trashedmovie.com
Want to do more?
If you have leftover building supplies you'd like to donate to a good cause, you can donate to Habitat for Humanity at http://www.habitat.org/env/restores.aspx.
