I'll tell you about my homemade lighting project. It is made of PVC pipe lamp with RGB backlight and a Bluetooth speaker.
In the hardware store I bought:
— Air duct round PVC D100, L=1m
— PVC D100 flange
— E27 Socket
— Tray for products made of expanded polystyrene (not bought. was on the farm)
First of all, build the base. For this we took the flange and PVC, and tray from polystyrene. Just take the tray and squeeze the flange circle. For the cartridge for light bulbs, squeeze out a circle in the center.