Crow said she had spent most of an environmental tour of US college campuses thinking of easy ways for people to battle climate change.

"Although my ideas are in the earliest stages of development, they are, in my mind, worth investigating. One of my favourites is in the area of conserving trees, which we heavily rely on for oxygen," the signed statement on her website said.

"I propose a limitation be put on how many squares of toilet paper can be used in any one sitting," she said.

"I think we are an industrious enough people that we can make it work with only one square per restroom visit, except, of course, on those pesky occasions where two to three could be required."

Other plans included not using paper napkins.

"I have designed a clothing line that has what's called a 'dining sleeve'. The sleeve is detachable and can be replaced with another 'dining sleeve'. after usage," she said in the increasingly bizarre posting.

"The design will offer the 'diner' the convenience of wiping his mouth on his sleeve rather than throwing out yet another barely used paper product... this idea could also translate quite well to those suffering with an annoying head cold."

Her third idea was for a television reality show in which the winner would be the contestant who lives the most environmentally-friendly life. The prize would be a recording contract.

Crow's spokesman was not immediately available to elaborate on the singer's proposals.