What household item weighs about 30 pounds? (15 kilos)?

Question

I am packing for a trip to Thailand, and Singapore Air apparently needs checked luggage to be under 15 kilos (33 pounds). I have no scale at home to weigh my luggage on, so I need to compare the weight to another 30-pound item... Any ideas for what I could use?

Thanks!!

Answer 1

A three year old child. Not lcose ot four but three. =)  Soryr that is all I can think of!

Answer 2

Four 1 gallon milk jugs full of water would weigh a little over 30 lbs. (2 lbs over)