Find Mason jars at the thrift store and have fun....
Pour some acrylic paint (the one sold in bottles for crafts) in the jar, and start twisting the jar around, coating the whole inside,
Instructions for this project may be found here: http://www.marthastewart.com/272417/sewing-kit-in-a-jar
To create these colorful jar, follow this link: http://www.momtastic.com/diy/168908-diy-tinted-mason-jars-in-rainbow
Jar-o-lanterns.
Instructions here: http://www.marthastewart.com/264230/jar-o-lanterns
Instructions here: http://www.marthastewart.com/264230/jar-o-lanterns
The instructions for these polka dots jars are in Spanish, but the many photos are very helpful for understanding how to complete. Go here: http://www.boulevardpinki.com/2012/07/diy-casa-jarrones-de-lunares.html
Use Them as Picture Frames
Make a Soap Dispenser.
Instructions here: http://www.theblissfullycontentlife.org/2010/08/homemade-christmas-canning-jar-soap.html
Instructions here: http://www.theblissfullycontentlife.org/2010/08/homemade-christmas-canning-jar-soap.html
Replace a Busted Blender Jar. Many detachable blade assemblies screw right onto a mayo jar or a small-mouth Mason jar.