Tau Firing Platform Ingredients & Tools 
Before your very eyes I will transform an empty spice bottle, seven cardboard circles, and A COAT HANGER, into a Tau Firing Platform! No photoshop here folks, just some scenery magic from the Magus_Arts Secret Lair!
Lets Begin
Use a compass and an box cutter to trace and cut out seven circles from some heavy duty cardboard. You want to have three large circles about 6" in diameter, three that are about an inch less and one even smaller. The small circle should be between the size of the medium circle and the spice bottle.
To prepare the spice bottle remove the lid and cut off the groves that it screws onto (you could probably skip this step, but I wanted the platform to be 5" tall so non-jump troops would have a chance at getting up to it).
The Powers of Scotch Tape!
Tape everything together from bottom to top in this order:
Lg Circle
Md Circle
spice bottle (narrow end down)
Sm Circle
Md Circle
Lg Circle
Set the remaining two circles aside for later. Ideally all the circles are lined up so their centers match. But if things look slightly irregular don't panic. Adjust it the best you can. We'll cover up any mistakes in the next step.
Behold! Instant Paper Mache 
I got this stuff at a craft store ages ago, so hopefully you can pick some up at Michael's or a place like that. Just add water and you end up with a lovely light mushy clay like substance. When this stuff dries it will be easy to sand and carve in with a Dremel tool and will also be extremely light weight.
Place everything that's taped together on some wax paper and start gooping it up with the instant paper mache. You want to build up a decent thickness so it can be sanded and carved later without fear of exposing the ugly guts of the thing. It might be a good idea to smooth everything out as best you can now to save some sanding time later. The only thing is that smoothing often causes your layer of goop to thin out. Just build it up the best you can and try to keep everything nice and circular (Aun'va's warriors will not be happy if they have to shoot from an aestheticly unpleasing platform!).
If you're impatient you can turn your oven onto the lowest setting possible to dry out the goo. But it also works just fine to let the whole thing air dry. I didn't like the idea of putting all that flamable and meltable stuff in the oven, so I just left it out for a few days (yes I started this project a while ago. The coat hanger gave me an idea for the roof support. Disqualify me if you think I'm a cheat =P).
This is what I've got so far 
Stay tuned. Updates from the Secret Lair will follow.