My daughter is left-handed.  My wife always has a hard time teaching her things because we are both right-handed.  Trying to show her how to tie her shoes was a struggle for us because everything was backwards.  On the other hand, there are so many things that are tailor-made for righties that we don't even think about.

1. Spiral notebook.  What a pain that must be to write in!

2. Drink cup holders in cars.  Always on the right-hand side.

 

3. Number pad on a keybaord.

 

4. School desks.  Can you say awkward?

 

5. Can opener.

papalaris, flicker