It's kinda impossible to avoid looting those in my opinion. You will end up deleting them at one point. I feel they can come out of any crate or basket etc.

The two ships at the daggerfall docks are pretty easy going, no need for crouching, just run through - basically only a couple of NPC's on deck easily avoidable.

More interesting are castles etc. Most major cities you can also just break into houses, doing a couple of achievements that way - but you are more likely to get a bounty.