A fence.
or
None. They will never find one that burned as brightly as the first one.
or
Two. One to assume the ladder and one to change the bulb.
A': None. If the government would just leave it alone, it would screw itself in.
or
Two, one to call Daddy, and one to get the (pick one:) mineral water/Tab.
or
From 2nd to 3rd because there's a shortstop in the middle.
or
A comb.
or