I don’t think I’m going too far afield to say that a closed box is one of the the great symbols of adventure. Two others that spring to mind are a map and a closed door. This image is Sea Chest, with the alternate title Funadansu, from the Los Angeles County Museum of Art collection. For today’s Photo Friday (I did say it was going to be intermittent, right?), I’m going to suggest three different things that could be inside this sea chest, whether as treasure or as the hook for a new adventure.

A Fine Reward

The PCs find this chest at the end of exploring a shipwreck, maybe one where they’re on the clock and racing against the return of the tides, or maybe one where they’re racing against the duration of their water breathing spell. In any case, it’s no great stretch for the sea chest to come from the sea. Spices are worth such care and protection, and… this is the first time I’ve looked up the price of saffron in the 5e Player’s Handbook. 15 gp, you say? The same as an ox, or a longsword? Pull the other one, it has got bells on. The next step up in price of trade goods is platinum, priced at 500 gp per pound. That might be a bit high, if you let present-day prices guide you (platinum is a touch north of $1500 per ounce, and saffron’s low-end wholesale price is tossed off as $500 per pound), so for easy napkin math, let’s go with 250 gp per pound of saffron.

Me, get dragged way off topic? Perish the thought.

Anyway, figure your players out. Are they going to enjoy the verisimilitude of a phenomenal treasure that they need to do a little legwork to sell for what it could fetch, or are they going to find the whole thing tedious? One of their best uses might be handing the whole thing over to a king or emperor to enhance the opulence of the court, and just enjoying royal favor for a good long time thereafter.

If those aren’t the kinds of players that you have, you can get a comparable high-density, fragile value by browsing the potions or scrolls of the DMG. For that matter, if “ship’s wizard” is a concept that fits your setting, a sea chest like this is a great place to store something as vulnerable to water as a grimoire.

The Mystery

Another thing that a ship’s captain might plausibly store in a stout sea chest like this one is the ship’s log. This takes a good bit of extra session prep to do well (because mysteries require more planning than other kinds of adventures). Send the players to the shipwreck in the first place with the goal of finding out why it sank. Maybe they have a rich aunt who invested in the ship, or maybe the first mate survived and is on trial for malfeasance, following an accusation from a disgruntled crewman. Something in the ship’s log can answer these questions, but in a way that requires further exploration and investigation. For example, maybe the ship’s log confirms that the helmsman was relieved of duty shortly before everything went to hell, but offers only some oblique hints as to why. The PCs then have to find the captain’s body and cast speak with dead, or have to find the helmsman’s significant other and ask some hard questions.

That Sinking Feeling

Mysterious cargo that creates a big plot twist once it’s revealed is a fine tradition in storytelling. If you haven’t seen Firefly, it’s, um. It’s a thing. (Pretty sure the expiration date has passed on its spoiler warnings.) This chest is a bit small for a person, unless we’re talking about an infant held in stasis, but there are plenty of other disturbing twists out there.

• I’m sure there’s a period in Japanese history where this chest being full of gunpowder and a few pistols would be a Big Deal (but I confess I’m not going to look it up right now).
• Maybe it’s full of poison, which was to be administered to the crew after they completed the early-modern-era equivalent of a black ops mission, or in sacrifice to some dark power. Maybe it’s a bunch of empty drams with the last traces of the poison remaining.
• Dragon eggs basically never go out of fashion in this particular situation. They’re the gold (or chromatic, you never know) standard in “treasure that is about to be more trouble than it could possibly be worth.”
• I love the metal plating on the chest. It sort of looks to me like those little plates could conceal additional paper- or needle-thin secret compartments, or could unfold into a Small or Medium construct. Who knows, maybe this chest is… more than meets the eye?
• Just about any innocuous object creates a sense of curiosity tinged with foreboding when paired with way more care and security than normal. At least in D&D-style fantasy one can readily guess that the object probably has some kind of magic.

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