A 6-inch (15 cm) square works best for a small desktop bank. Method:

For a more permanent and sturdy option, use . This heavier paper allows the bank to hold more weight without collapsing. Supplies: Cardstock (heavier than standard paper). Glue or high-tack double-sided tape . Method: Cut a template for a simple 3D cube or house shape.

The "bank" functionality is achieved by leaving a narrow slit between the final interlocking folds where coins can be inserted. 2. Cardstock "Piggy Bank" House