The ReCaptcha problem (use of nonsense words in Captchas) hasn't subsided, which means it's going to be a great deal more difficult to find something people can draw.
Therefore, we're going into an experimental phase. The next update I'll post will be the last batch of words that actually make sense. After that, I'm going to start trying to make pictures of nonsense words, and encourage you to do the same.
Every once in a while, you actually get one that makes sense, so keep trying!
Thanks to the folks at Carnegie Mellon, the internet has a never-ending source of random word pairings. Get a Captcha text box (hopefully one that makes sense). Refresh until you get something you can draw. You're welcome to use Paint, Photoshop, real pictures, scanned scribbles in your notebook, cave paintings, whatever.