Octopus should have dedicated Neopixel pins I believe? Or you use those for SB? Be careful with how much output those pins can handle, full sticks can be pretty demanding. If you want more sophisticated control over them, take a look at WLED controllers and boards which you can plop them in and power separately. Klipper has support for those controllers.
VORON made lighting for its printers too. There's Daylight On A Stick for white high-CRI light, Disco On A Stick for RGB, and Nightlight for UV. https://github.com/VoronDesign/Voron-Hardware/tree/master/Daylight
Check vendors selling VORON stuff in your region, they usually carry those, also XXL versions for 350 sized printers, Matchstick versions exist too.
If you buy them complete, they come with some connector soldered in. If you order those from JLCPCB or PCBWay yourself, you will have to pick and solder connector yourself, unless you order it with that service (will make it more expensive). You then treat it as any other device connected to the printer, meaning you crimp connectors on 3 wires and run wires wherever they are needed.