Inkscape for U3

Yes, it can be done.

• Get PackageFactory For U3.
• Download the standalone Inkscape for Windows archive and 7-Zip to unpack it to your desktop (thanks to PenDriveApps for the link).
• Open the folder; it should look like this (without the colors and annotations).
  

• Drag the Inkscape.exe (not Inkview.exe) icon to the DROP EXE space, but do not click the CREATE! button. Click Advanced Mode... instead.
  
• Add files and folders to the appropriate PackageFactory folders as marked above and go back to the Summary tab.
• Click Create a U3P File... and be prepared to wait while it packages the application. Save it to your desktop.
• Add it to your U3 drive from the Launchpad's Add Programs (Install From My Computer). Expect it to take up to five minutes; this ends up using over 200Mb on your U3 pendrive.
• You're good to go!