How about ducking into the Hardware store for 'a long weight for a plane', or maybe a 1 litre can of Striped Barber Pole Paint?!
Back when I was working in a Hardware store during my school holidays, one of the local painters sent his new apprentice (who was maybe just a year or two older than me) down for one of those 1 litre cans of Striped Barber Pole Paint; so I mixed him up a can of paint, a long shot of Red paint colour in a can of White base paint, stirred it once or twice so that it streaked up nicely, sealed it again and told him to be very careful not to shake it, and sent the poor fella back carrying that can like it was a thermo-nuclear bomb! But the boss painter had a meaner streak than mine, and he sent the new guy straight back with the can to say that it hadn't worked, I must've mixed it incorrectly. So I opened the can, took a quick look inside at the pink results, swore, and told the apprentice to take it back to his boss and tell him it was his fault it hadn't worked, cos he'd put the bleedin' striped paint on upside down!!
The apprentice didn't come back for a while, and the next time I saw the boss painter, he grinned at me, and said "Well played!"
But you'll all hafta excuse me for a moment, I gotta go collect a bag of sparks for my grinder.