A simple circuit that powers a led strip when the momentary switch is pressed, then shuts it down automatically after XX seconds. Not tested yet. There is a potentiometer to adjust the length of the delay but I need the light to be ON for at least 30 seconds. I may have to change the values of capacitor C1 and resistor R1. A 100uF capacitor and a 500K potentiometer should give an adjustable delay of near 0 seconds to 55 seconds. I know almost nothing about electronics but this looks simple enough, even for me.