"upset" rebar candle holder.
"Upsetting" in blacksmithing is defined as, reducing the length and increasing the width of a bar through forging.  
These were made by taking a 3.5" long piece of 1.25" thick rebar, standing in on end, and forging it down to a half inch x 3 inches and forging and indentation to place a candle. 
Made from reclaimed steel and weighs about 1.2 lbs.
 
This is for one candle holder with a beeswax tea light candle.