Occasionally I need to work at a building with lights controlled by motion sensor. With the recent high energy prices, they have shortened the "lights on" period from 10 minutes to about 3 minutes. It is a real pain to work like that as I need to get out of the place were I am and go to the motion sensor really often or use my phone torch (not ideal and battery draining).
Is there anything that I could attach to the sensor to keep the lights on? I would also need to remove it later.
*It is indoor so air flow is zero... A balloon could work but it is not easy to get it and it won't last 4-6 weeks stored until the next time I need to use it.