For the first 10 weeks of her life Bootsana carried a soft puppy nurser (her pacifier) in her mouth all the time and yelled whenever she dropped it. She continued to yell - almost brat-like - until someone placed it back into her mouth. At around 10 weeks of age she decided banana was better than a nurser, so solid food (which she also yelled for) was slowly introduced. Every day Bootsana was also given flapping exercises, as much as she enjoyed.
You can sponsor the care of these bats through their Adopt-a-Bat program. Link -via Everlasting Blort