I make wheat based treats for mine and they love them. I take wholemeal flour and mix in whatever flavouring I'm using, ie dried herbs, ground up dried flowers etc and then just enough water to make a manageable dough. I roll it out to about 5mm thick then cut out shapes from it, poke a hole somewhere in it (to allow for hanging) and bake in a fairly cool over until they're hard - usually about 30ish minutes. I'm planning to try steaming some brocolli and then pureeing it and mixing in flour to make a dough and baking that so see how that works.
Jane Goos: Dorothy, Nancy, Billie, Agatha Norman, Twinkle, Charlie and Pedro