Instructions

Things that come with instructions but don't need them:
1. Electric toothbrushes
2. Cars
3. Your home city's metro & bus system

Things that don't have instructions, but could do with them:
1. Turkey-size tinfoil (shiny side in, or out?)
2. Playing Cards
3. Hotel room showers (especially in America)
4. un-filleted fish served in restaurants
5. Buses abroad
6. Ski's

Things that do have instructions, but they are never quite good enough to help you achieve what you want to do..
1. Metro systems abroad
2. Someone else's hi-fi
3. Tins of paint

Please feel free to add any more you can think of...