Abstract: Internally illuminable playing cards are disclosed. The disclosed playing cards may include a polymeric body, at least one light-emitting diode (LED) at least partially inside of the polymeric body, a battery (or a slot in the polymeric body for receiving a battery) for providing power to the at least one LED, and a switch at least partially inside the polymeric body and operatively connected to the at least one LED to facilitate turning the at least one LED on and off. As can be understood based on this disclosure, the internally illuminable playing cards can be used for flourishing and cardistry techniques, in a manner similar to the way typical paper playing cards are used for such techniques.