A blister card a printed card with a clear plastic bubble affixed is a popular packing choice. Commonly packaged using this approach are electronic devices, and small consumer goods. Custom Blister Cards let businesses show their goods in an attractive and safe manner. A blister card a printed card with a clear plastic bubble affixed is a popular packing choice.  Commonly packaged using this approach are electronic devices, , and small consumer goods. Custom blister cards let businesses show their goods in an attractive and safe manner.