Before i got my own issued tractor unit i kept a tupperware box in me bag with the necessary bulb selection, plus a few typical fuses and some insulation tape etc.
Nicking stuff from someone else’s kit doesn’t suprise me one bit, wouldn’t mind but our lot arn’t stingy you can have anything or any cleaning etc chemical you need, not so bad now but at one time i’d find some of my well maintained trailer kit being swapped for their rusted seized up tat, cured that by freeing off otherwise old looking kit, like magpies they prefer shiny baubles even it’s so stiff you can’t use it 
I’d rather bulbs than these led lights, longer lasting they may be but when they do fail its a garage job, dread to think how much a new full sealed beam led headlight unit will be.
