Logo needed for a educational bank

I need some logo options for a application that is designed to assist kids with financial education. Therefore the target market are kids and the younger generation. The requirement is something simplified, smart and flashy. Therefore not too much detail but still something that catches the eye. The app is called S-bank, and the S can be used for different words that starts with an S. Mainly it will stand for Smart Bank. Not any specific colours in mind yet, was thinking that because the target market are kids something funky like Neon colours would look nice. It will be great to see different options.