Maybe I can interest you in my Tie::OneOff module. 
require Tie::OneOff;

package cool;

sub name : lvalue {
    my $self = shift;
    +Tie::OneOff->lvalue({
        STORE => sub { 
            my $val = shift;
            # Do whatever
            $self->{NAME} = $val;
        },
        FETCH => sub {
            $self->{NAME};
        },
    }); 
}

[download]
This module was the result of a discussion in comp.lang.perl.misc.

In reply to Re: Extending LValuable Subs with Tied Variables by nobull
in thread Extending LValuable Subs with Tied Variables by Limbic~Region

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