Well, extreme paper saving would be not printing at all, or converting the source with Acme::Bleach (skipping the first line of the result) prior to printout.

An A5 booklet from an A4 printout with both sides covered looks like a very reasonable way of paper saving (to me, that i ;-)

_($_=" "x(1<<5)."?\n".q·/)Oo.  G°\        /
                              /\_¯/(q    /
----------------------------  \__(m.====·.(_("always off the crowd"))."·
");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}