from my perspective, crucible is easy to use, but pyrolysis step would take much longer (it must heat up first) and proper oxidation of carbon inside would take relatively long time. maybe put air to the bottom of it, i saw it recently in some YT video.
lot of assaying (ICs, cut PCBs with electrolytic caps removed) is done by wrapping the material into stainless steel mesh and heating above 600 °C - maintaining airflow in the oven for few hours, which throughly burns the carbon residues.
you ca also place the ICs in stainless steel frying sieve (or any other well-perforated stainless steel dish) and bake it in classic propane fueled foundry - but you need to supply air from the bottom or add second stage on top with air supply (perhaps compressor), where all volatile carbon junk, ashes and gases will burn properly, so no smoke or smell is produced. burning off the plastic in wood fire as seen in many YT videos is big health hazard as many toxic aromatic compounds volatilize. if you see black fumes or smell, you dont have complete burning. use higher temperature or more air.