Personally, I would go with PVC for a small tripod, it is very light, and can be dealt with accordingly after you are done with it. (Give it to someone there in Europe)
First, if you are only talking a DSLR and a smallish lens, then it shouldn't be a problem at all. If not, a weighty bird or wildlife type lens, it may not, and probably is not, a good thing.
If you look at PVC pieces, they can tell you what you need to know, (hopefully) if you are wanting a larger, normal sized tripod, I wouldn't advise it, although, it is doable. I make stuff out of PVC all of the time, in extreme heat it can get soft and bend, and in extreme cold, it 'could', but probably wouldn't, break. It's not perfect, but in a normal weather pattern, this can work for you, and work really well.
The hardest part is connecting the camera to the PVC, the thing you need most is the 1/4x20 bolts, that is the thing that will attach your camera to the (squarish) tripod base. (You could screw a tripod base-plate of your choice on it too, to make it easy to release)
The base is whatever you want to use, but something that is safe for your camera. (By the way, this is a disposable tripod, so don't leave the camera on it unattended, you might regret it) All this will be is three short (3'?) pieces of PVC pipe (schedule 40 thickness) and the bolt and a base-plate. Stare at a tripod and I would imagine that you should soon see what you need to build to suit your trip. A few 45 degree elbows, and a piece of acrylic for a place to attach your elbows for your legs. Using good screws, it wouldn't be anywhere near what a 'real' tripod could do, but it'd work.
By the way, this can be easily made to dismantle so you can stick in in a bag/carrier of some sort...
I would never build a PVC tripod to use daily, to keep, but in a situation like yours, that sounds like it might be what you need to do. You could use wood, which would be a lot more sturdy, and heavier too, that would also be disposable, it's all in what you want to try and do.
Anyway, this may sound crazy to you, but it may be a jump start for an idea, hopefully it helps some.