Use the Force, or the lightsaber, or whatever you got lying around.  This is one of the new energy blades for the year, as Bladebuilders seems to be doing as well as or better than action figures with much of the general public right now.  Kids love to hit things!   Hasbro sent along this press photo and block of copy for you, the viewer.

STAR WARS BLADEBUILDERS PATH OF THE FORCE LIGHTSABER
(Ages 4 years & up/Approx. Retail Price: $49.99/Available: 2017)
Young Padawans can choose to follow the dark side or the light side with this premium lightsaber! Imagine fighting on the light side by attaching a Jedi connector piece and automatically activating blue light effects, or simply switch the connector piece to battle with a red Sith blade. For more action, press the button on the connector piece to expand the hilt for ultimate customization! Compatible with BLADEBUILDERS LIGHTSABER components, each sold separately. Includes lightsaber and 2 adjustable connectors. Requires 3 1.5V AAA Alkaline batteries, not included. Available at most major retailers and on HasbroToyShop.com.