Spike Prime & EV#

I'm new to Lego programing and need some help. I have some Spike Prime kits and one EV3 base kit. We are trying to solve the problem of keeping our classroom lights on. They automatically shut off if there is no motion detected in the room after 5 minutes (when students are reading or working on their computers, the classroom lights go off). We want to build a device that can keep the lights on. We're thinking 1) something that moves back and forth continuously (easiest but will drain the...