Hello Portable App people --
I would love Portable Inkscape (or is it Inkscape Portable... /me doesn't like the new names). It would be great companion for GIMP Portable as well as Blender. As far as I know, Blender is already portable. It's a great 3D program; it's cross-platform, less than 16MB, and runs off a USB key/iPod/whatever. If you've ever wanted to try 3D software, it's a great program. A bit hard to learn, but there are plenty of tutorials, and it isn't too hard if you put in a bit of effort.
Anyway, Portable Inkscape would rock.
Proud user of Portable Firefox
Unfortunate killer of USB keys due to the aforementioned use of Portable Firefox