Occasionally now and then I feed mine......
Brown bread with honey on
Brown bread with garlic on
Mix up some pellets with honey, garlic and clay
used to also throw in some frozen veggie mix (pea's\corn\carrot)
Frozen Blood worms
Some loose shrimp\prawn
thats all I can think off for now......oh yes, also used to throw in some silkworms when my son was not watching, also used to take the pupae out their cocoons and chuck them into the pond.
thats about all I can think of for now