Do you think Giram could be compiled for pdaXrom?
"Nothing is impossible!" has always been my slogan as a programmer and I have yet to see something that is not possible (or something that will never be possible in any future) so the aswer is positively "yes".
However, I'd like to restrict this thread to Blender, just to not to get stuff mixed up in too many (and wrong) places. You're welcome to start a new topic "Giram for the Zaurus wanted" in the software section if you wish or "Open Source 3D appz for the Zaurus" to discuss which appz might be interesting to port to the Zaurus!
Hey, and include a POLL in that thread, while you're at it
In the meantime, if you wanna see some 3D suits running on your Z, why don't you check out "The Art of Illusion"
http://www.artofillusion.org/It's a 3D suite written entirely in Java, so it should run on the Z without any modifications.
I haven't tried it out yet because I don't even have my Zaurus yet (I'll find it under the X-Mas tree next X-Mas) and I'll definately check out more Open Source 3D programs / modelers, but when it comes to porting, I'll dedicate myself to Blender only. The Art of Illusion has been around for quite a while, but Blender even longer and Blender is really a quite mature product, that's why I'd rather stick to Blender.
(And it's originally a Dutch product, so this makes me quite proud, as I'm Dutch myself )