The lava-lamp wax sinks on cooling, so the surrounding liquid must have a density a little less than 0.9. Ordinary alcohol (ethanol) has a density of about 0.8, and a 40-50 per cent aqueous solution would have a density that could be adjusted to just below that of paraffin wax. The solid wax would then sink.
Now you know what to pack for Bora Bora you can get started. When you are done, weigh your bags. Luggage allowance for Air Tahiti inter-island flights is 20 kg/45 lb per person and strictly enforced (due to plane size). Divers may have 5kg extra. Carry on hand luggage is 3 kg/6.6lb. See more absolutely 'must know' info about flying to Bora Bora to ensure smooth Bora Bora travel.
A maximum of one (1) checked item will be allowed per customer. Overweight items may not exceed the maximum weight limit of 50lbs (23kg) and are subject to overweight baggage charges. Oversized items may not exceed 80 linear inches (203cm) in overall dimensions and are subject to oversized baggage charges. Certain items (e.g. Sporting Equipment) may exceed 80 linear inches in overall dimensions; however, the item may not weight more than 50 lbs (23kg).