I have a player looking to design a character whose previous profession of trapping heavily influences their adventuring style. What features, items, spells, or other player resources would allow them to set 'hasty' style traps in no more than a couple of minutes (such as the hunting trap item, or Cordon of Arrows spell).
By 'traps' I mean methods or mechanisms designed to influence, hinder, or expose enemies, which must be set up before use, operate on a trigger (set off by target or by trapper are both fine), and in which the trapper is not the immediate source of the effect (so just readying a fireball while hiding would not count).
Besides the hunting trap and Cordon of Arrows, options seem to be limited, I expect in an effort to preserve action economy as much as possible.
This game in question is part of adventurers league, so I would prefer options using AL legal resources rather than other ones or GM improv.