[ECUPirate]

I finished my watercooling setup, but there are some faults. It takes up much space, still makes some noise (hard to isolate vibrations), and the heat source (rad) is still inside the case (I have to keep the rad fan on, or the rad will heat the ambient in my case). Also, the pump is occupying 2 of my drive bays.
I want to create an external enclosure for all of my WC components. I want to use a clear material. It should be workable (drillable and tapable), not prone to cracks/leaks/breaks. In this device, I'd like to include a resevoir, built into the enclosure. So, the material I use should be easy to bond (watertight).
I'm just gathering ideas right now... What material should I use? Cost is always a factor, so specify the Ideal material to use as well as the most practical. Pics of similar attempts could also be useful.