Filth wizardry turns milk containers into doll houses using just a scissors and markers.
Good for ages 8 and up.
Get the instructions here:
http://www.filthwizardry.com/2009/07/fairy-houses-and-fairy-wings-for-your.html
Get the instructions here:
http://artereciclagem.blogspot.com/2012/07/ideias-inusitadas.html