How can a sound project be made using recycled household items?apply knowledge about sound to create a musical instrument that makes different...

I like the idea of a xylophone type of instrument. You
might rather use aluminum soda cans for your tone-bars. fill them with appropriate
amounts of water, and then use mallets to hit them. The mallets can be made with pencils
and a bit of yarn wound around the eraser end to create a
ball.

Another type of musical instrument you can make from
recycled items located at home is a percussion instrument much like a maraca. Fill an
empty plastic water bottle with small gravel from the drive way, dry beans from the
cabinet, or uncooked dry rice. Each item will offer a different level of percussive
noise.

You can make a horn type of instrument by using
garden hose and a funnel or a funnel end from a plastic soda bottle. You will need some
duct tape to secure the pieces together and to make them air tight.   You can make a
primitive horn by simply using the soda bottle with the flat end cut off. Buzz your lips
like making a raspberry sound against the narrow funnel end, and
voila...noise!

Check out the videos in the links below for
other interesting and creative ideas.