use OurApp;

my $obj1 = OurApp->new(conf_file => 'conf1');
my $obj2 = OurApp->new(conf_file => 'conf2');

# can use both foo and bar accessors on BOTH objects

print $obj1->foo, $obj1->bar;
print $obj2->foo, $obj2->bar;

__END__
conf1 contains:
  foo=1
conf2 contains:
  bar=1