It's difficult to imagine a traveler disembarking from an airplane wanting to spend a night in one.
But if the number of hotels built into airplanes is any indication, such travelers do exist.
Costa Verde, a luxurious hotel located in a Costa Rican rainforest, is a recycled Boeing 727.
Despite its clipped wings, from the exterior it looks like an aircraft emerging from the jungle ready to fly out over the Pacific.
The fuselage that encases the two bedrooms of the "727 Fuselage Home" suite is intact. Apart from the distinctive shape of the portholes and curved ceiling, however, the interior feels more woodsy bungalow than aircraft.
Meanwhile, Stockholm's Arlanda Airport has budget accommodation Jumbo Stay, a hostel built into a Boeing 747, popularly known as a Jumbo Jet.
"I financed and built the whole hostel," says owner Oscar Diös. "We wanted to be unique, but not discriminating toward anyone with a smaller budget."
This welcoming attitude may be why the cockpit has served as the setting of several weddings, and why former 747 pilots are regular visitors.
"Jumbo Stay is a place for everyone," says Diös.
For €350 ($465) a night, there's the Airplane Suite for two in the Netherlands.
Built inside a decommissioned Ilyushin Il-18, it comes with amenities you couldn't have on a private jet -- Jacuzzi, sauna, flat-screen TVs and basic kitchen equipment, not to mention a mini-bar and DVD collection.
Most airplanes try to avoid submersion in large bodies of water. That sort of thing is usually called an "accident."
But if the airplane is empty, then sinking it into the sea to create an artificial reef, like the Artificial Reef Society of British Columbia (ARSBC) did with a Boeing 737, it might actually be a good thing, as they become homes for, and thus promote, local marine life.
"The 'passenger list' of creatures that now inhabit the reef has grown to over 100 species," says Deidre Forbes McCracken, director of public relations at the ARSBC.
Recycling an airplane means recycling the interior as well.
Australian retailer Rushfaster stocks laptop messenger bags fitted with former airplane seatbelts as straps -- a good gift for university freshmen who need to lug around textbooks.
Then there's British retailer Worn Again, with its Worn Again Virgin line. Though often out of stock (recycling depends on the availability of discarded materials), the company stocks a line of bags, clothes and accessories made from recycled Virgin Atlantic interiors.
European architectural firm LOT-EK has ambitious concept designs for a library of more than 200 stacked Boeing fuselages; Sky Tram presents the idea of converting fuselages into futuristic supertrains that would run on tracks suspended several stories above the ground.