Anything I've thought of so far always ends in "and then the underpaid delivery guy gets fired and starves to death" or "and then the person packing the boxes has their wages cut"
Are there methods here that actually just harm the COMPANY not the people who happen to work there?
Have you thought about infiltrating said Ohio River Agricultural Products Ltd company and spreading union propoganda. You could try to access their employee discord and reddit sub (both publicly searchable). Also consider getting a job there just to organize.