An electric reciprocating saw (originally designed for hardware use)modified to have a dildo attached on the end of it. It is seen used on clips from the Howard Stern show, as Dana Dearmond demonstrates it.
An outhouse in the middle of the woods (sometimes near a cottage) that is converted to become a small place for alot of fucking to go on, the plumbing is removed and replaced with a carpet and a lava lamp, creating a great enviroment for fucking with very little people around to hear/intrude.