a fastener system includes a toy product , a support platform , and a plug that engages a keyhole formed into the product . the plug includes a base and a pronged key extending from the base . the support platform includes a through - hole that permits the passage of the key into the packaging . one or more integrally - formed biasing members are located on the base of the plug to draw the key toward the product and create a secure connection . the pronged key may be formed from a plastic material and configured such that it plastically deforms but remains attached to the key when and predetermined force is applied to the key to pull the key from a misaligned position with respect to the key hole .