... your carry-on luggage can also be used as a flotational device:
Cheap airline explores passenger tolerance
It recently announced it will dispense with the plane's window blinds, reclining seats, Velcro-anchored headrest covers and the seat pockets where customers normally find a safety notice and free magazines. The required safety notice will be stitched to the back of each seat. [...] Theoretically, an airline could abolish toilets and free drinking water on its short flights _ and Ryanair's main competitor in Europe, easyJet, has reduced the number of toilets on its Boeing 737s from three to two, adding another revenue-earning seat.
- Salon.com