Yesterday's ScribbleTaku managed to last all the way until the sun broke through this morning, with dr_neeson managing to snuff it out before most people began work. It was the radar reticule from Terminal Velocity, which you can see for yourself here.
So considering that it lasted more than several hours, I think I'll chalk yesterday up as a win for me. Let's see how this fares.
As you can tell by the improved drawing (and nicer post-it colour), this ScribbleTaku doesn't come from it. It's from WiseHacker, who sent in two images. Being beaten around as much as I have in the last couple of weeks, I've opted for the "harder" of the two, but we'll see how it goes.
There won't be any hints for this one. Good luck! (And if you want to have your scribbles featured, or you'd prefer not to deal with my tortured drawings, here's my email.)