what kind of tools?

cell phones are unidextrous, so are bottle caps, computers, automobiles, door knobs, light switches, books, televisions, radios, sometimes I wish I was left handed when trying to unscrew things in my desktop computer!, pencils are very ignorant of hand (unless you care what direction the text points), they make left handed scissors as well as omnihandal scissors (which are a pain to use for everyone!), trumpets might not be a perfect instrument for a left handed person, but they can take up the drums, or do some nice bass lines on a piano.