This is the printed body of the Dreadd lords lightsaber from Star wars the old republic.

The body can be supplemented with electronics purchased for example from aliexpress. For example: https://1url.cz/c1MYm

If you want to add electronics, you need to replace the model body 1 with a copper or aluminum tube with a diameter of 28mm and an inner diameter of 26mm, i.e. a wall thickness of 1mm

You also need to buy 4 magnets 12x2mm to hold the bottom part which is for the entrance if you need to remove the electronics. M4 screws to hold the blade and electronics inside the body

If you want to print the model for exhibition, you only need glue