Oooh, spark cord + charged spark gland. Why a charged gland? Well, it becomes like a battery- dead batteries have no value.
Either drop loose spark directly onto a spark gland (less efficient but instant. Maybe can “overcharge” a gland by dumping a massive chunk of spark into it?) or place a spark gland into a spark core to slowly absorb spark from a core’s reserves for a “full charge” (some set limit where a gland is charged, but stable) before crafting the charged gland and cord together in a work bench.
I… dude I think this is an awesome idea