OK, so here is the situation (deal with what it is, instead of suggesting a different class/race/skills/alignment/etc.)
We are a party of four, all 3rd level. Two of the party are of a good alignment, the other two are N and CN. The two less-than-perfectly-upstanding are a Human archery-focused Slayer and a Ratfolk Urban Druid with Craft Alchemy and Craft Wondrous Item.
We are playing Hell's Rebels, but this post does not revolve around the actual details of the module - what I and the Slayer are wanting to do are small chaos-inducing side ventures with a goal of denying persons loyal to House Thrune and the Asmodean Church their livelihood, humiliating them, causing infighting, etc. through creative use of items I can craft. The DM is willing so long as we do not sidetrack the AP.
Get devious, there are a lot of possibilities out there... let me know your ideas for deploying Brewed Reek, Rusting Powder, Wasp's Nest of Swarming, mis-labeling a potion bottle with an Elixir of Sex Shifting, etc, etc. get creative!!
We are not looking for wanton destruction, or outright assassination or to murder anyone, though if there is an Asmodean-worshipper's death here or there, we would not be *too* heartbroken...
We have a caveat that innocents not be harmed (within reason), so like... a night attack of a Thrune-loyal ship in port using multiple archers with Slow-Burn Arrows (Craft:Alchemy) would be out - innocent sailors could be hurt in the fire, and if it worked and the ship went up in flames, the crew who may not even care about House Thrune would be put out of work.
Social gathering disruptions. Infiltrate via Disguise and Bluff and Kn: Nobility, spike the punch with puke juice and/or libido-enhancing substances.
Docked ships usually don't have crews aboard at night besides a skeleton crew. Reconnoiter those ships, then figure out your game plan from there. Depending on Profession: Sailor and other possible skill checks to guide your chaotic messiness.
Creative graffiti goes a long ways.
Rusting powder applied on strategically-placed chandeliers in religious locations could (depending on timing) tactically dispatch Evil Preacher Dudes with nary an innocent lost.
Generally speaking, your limitations are going to be in-game down time to craft alchemical goodies, appropriate facilities and supplies.
Keep in mind you'll be stirring up the local Hellknights to go all Secret Police on you (and the innocents in the vicinity of your pranks), so you need to keep in mind the blowback on the local citizenry from your 'pranks'. Targeting the nobility mingling parties has the potential to result in the halfling servants being 'interrogated'...