I've made a remix of these two very nice versions of the Cal Kestis damaged light saber (Star Wars: Cal Kestis' Lightsaber Remixed by 3Deen-Druck - MakerWorld & Cal Kestis' Fallen Order Lightsaber - Xenopixel compatible by GKeys109 - Thingiverse)

I've added a collapsing blade made from translucent PETG. Further I've made a threaded connection between the grip and the upper part so that a flashlight can be added. I've used this one 4x Zoom LED Taschenlampe Lampe Super Helle Mini Licht Lampe Taschen Stift DE | eBay

To keep the focus of the flashlight at max distance I've added a 2-part ring. Further I've added a mechanism to be able to switch it on and off when assembled (little pin in the bottom part - see sketch).