Hungry Grub / Coin Bank

Children struggle when waiting and are curious with everything. Relating their imagination and curiosity to nature, we can give them enjoyment rather than a discipline. Hungry Grub is a coin bank which looks like a grub. Initially, it is short with squeezed pattern. Parents can install it on the wall with the measuring tape aside. As the child feed up the grub with coins the child gets a direct feedback. The grub grows taller and finally it becomes long enough to be ready to turn into a butterfly. At last, the child opens up the coin bank, he or she will take out all the coins with a small paper butterfly secretly hiding at the bottom.