Flame producing assemblies

A flame producing assembly comprising:

• a main body having a proximal end and a distal end, wherein the flame producing assembly is configured to produce a flame at the proximal end,
• a flame signal trigger comprising a sensor configured to detect an ignition of a flame produced by the flame producing assembly and configured to generate an electrical signal when a flame is currently produced by the flame producing assembly,
• counting electronics configured to calculate a number of flames and/or use time of flames produced by the flame producing assembly,
• a flame indicator configured to output visual feedback indicative of a number of flames and/or use time of flames produced or producible by the flame producing assembly, and
• a power supply comprising a nanogenerator configured to supply the flame producing assembly with power by converting thermal or mechanical energy into electrical energy during use of the flame producing assembly.