Espio loves apples. I cut it into little bitty pieces and hold it in between my thumb and pointer finger with enough sticking out that he can easily get it with his tongue or mouth. Then I just wiggle it back in forth. The movement catches his attention and he comes over and eats it. Once he recognizes something as food I can just put some of it in his little feeding area where I normally put his bugs and he will eat it whenever he wants.