I had replaced mine with copies made from my orginals but apparently you can order them from Toyota. There is a threda about it somewhere, you'll prolly get more luck searching and asking in there...
EDIT: here it is
http://www.alltrac.net/phpBB2/viewtopic.php?t=1897
EDIT: here it is
http://www.alltrac.net/phpBB2/viewtopic.php?t=1897