So, I ordered a few things that were mentioned here.
Schwimmwaggen - gorgeous kit, completely unsuitable for the purpose I had in mind. I always forget that Tamiya kits are for modelers, not wargamers. Too many tiny bits thta will snap as soon as we touch it, and it was small, too small, even at 1/48 scale. I built one of the two I bought, and I am still considering what I am going to do to the other kit to make it more robust for my purposes.
Ainsty river launch - this thing is gorgeous. Recommend highly.



This baby got a camo paint scheme - I felt if you were using a boat this size in the post-apoc, you would want to be able to hide against the shore. I also added a few bits and bobs, like the searchlights and the toolchest.