my favorite is old expired ( 5-7 years out of date )
tmy or tri x sheet film stand developed in
instant coffee, spiked with washing soda, vit c and a splash of 1+ year old ansco 130 ...
processed until it is bullet proof
then contact printed on ilford fbmg ( or rc ) using a 300watt flood light .. processed in
expired ansco 130 dilute 1:2ish