You can order custom ones direct from Bonnie if you join her yahoo group. Other than that
HC,
K&F shops,
the nappy garden,
Jabula nappies,
Bums n roses. Most instocks sell out really quickly so you might be better off joining the yahoo group(at the bottom of the homepage
here) and adding your order to the database although there'll be roughly a 2 week wait.
HTH