Can I make a list of objects?

Yup, since objects are just scalars e.g

use IO::File;

my @list = map { IO::File->new($_) or die("ack: $!") } @ARGV;
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Can an object create another object and pass it to yet another object.

Indeed.

sub Foo::new { bless {}, shift }
sub Foo::get_bar {
  return Foo::Bar->new();
}
sub Foo::Bar::new { bless {}, shift }

sub Baz::new {
   bless { bar => pop }, shift
}

my $baz = Baz->new( Foo->new()->get_bar() );
print $baz->{bar},$/;

__output__

Foo::Bar=HASH(0x80fbc2c)
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A little laboured perhaps, but the above example is basically demonstrating that an object is just a blessed reference, nothing too magical about it.
HTH

_________
broquaint