Note: I have poorly researched some of these aspects, so I suggest researching them deeper if you want to try creating something with these ideas.

Before I begin, I must say that I like the idea of this project. But a problem suddenly appers if you realize that there isnt actually much you can think in termes of interesting cometics, weapons, and maps. Unless you have watched every single jungle movie or studied alot of the central/south american cultures.

So I have made a short, but interesting, cosmetics, maps, and weapon reskin ideas you can try to create for this update. I only know the basic of adventure/jungle movies, so this list will mostly be about the culutre of the central american side of things.

1. Any of the Aztec Armory and Weaponry:
This one is quiet obvious, and Im already seeing stuff like a type of Aztec helmet as a possable choice. But there are still some things that should be taken into consideration:

a. Ullamaliztli Ball - If done cleverly, it can be a good sandman reskin or a taunt.
b. Aztec Spiked Sword - Since there dosent seem to be one yet, maybe a good boston basher reskin.
c. Aztec Sheild - This is a must have for this update in my opinion, this could be a Demoman shield reskin.
d. Aztec Crown - I suggest checking this one out, their crowns look halarious.
e. Aztec sacrific knife - A good spy knife reskin.

2. Mayan/Incan Items:
These guys are usual connected to the aztecs, so there wont be much on here:

a. Any Jewery - This is too easy, so Ill just put it out there.
b. Incan Clothing - Their clothing is completly diffrent then the mayan and aztecs.

3. Movie Refrences:
These are why this is a hard project to do. Most of these obvious refrences are already taken a bit, like Inidana Jones and Tomb Raider. But there is some stuff you can still have from this:

a. Indiana jones ideol - Remember that Ideol Indiana was looking for at the begining of the first movie? Well just put that somewhere as a refrence.
b. Any of Indie's Rivals - I would suggest the get-up of Arnold Ernst, but you can choose from all of the villans.
c. Crystal Skull - Tread at your own risk.
d. Expidition Hat/clothing - Most of these are usualy found in movies, but they are usualy remembered by the movies soo. Go for it if you know what your doing.
e. Any Animal Companion - This will be a nice addition as a cosmetic.
f. Uncharted - I know this subject is too broad, but I would suggest it as something. Just dont choose Nathan Drake's hair.
g. Indiana's map - This is more of a personal idea, and it may be hard to do. But this is a taunt where you look at a map and able to walk at the same time. I think this is also from the begining of Indiana Jones where he stares at a map and walks through all the traps in the forest, and somehow gets out with no scratches. It sounds fun, but it might also be boring at the same time.
h. Any other adventure movie - This is just here because I dont watch movies much. :P

Map Ideas:
This is just some suggestion for map makes on what consepts they can put in:

a.Mayan/Aztec Archaeological site - It would be cool for a part of a payload/control point map.
b. Relating to they Mayan Calander - This will be a fun mechanic for something, maybe it can do stuff while you progress through the map. Heck, maybe a 2012 refrence.
c. Just a Jungle - Just telling you that it dosent have to be all temples or monuments.
d. A Cenote - What is that? It is a pit full of water. The Mayans used it to place sacrifical offering in. It will be a perfect death hazzard.
e. Inside a temple full of Mayan/Incan/Aztec Archetecture - self explainditory.

So that is all of my ideas for this project, hope this helps bring in more interesting content. Now do you have any ideas? ;)