Not only does the finer wires allow more flexibility, it allows higher amperage due to electron flow only along the outer surface of each wire and the finer wires have more surface area than heavier wires for the same gauge.
We NEVER get rid of old/used candles, I then go to my woodshop cyclone trashcan and pack paper dixie cups with wood shavings. I then melt down the old candles on a hot plate and fill the cup with melted wax. Waterproof and pretty windproof too !
New Pig also carries containment pallets
https://www.newpig.com/pig-economy-2-drum-poly-spill-containment-pallet/p/PAK605
link is for a two drum unit for $226