Window crank on the floor after toyota servicing

[IMAMEX]

So I took my Yaris in to get serviced and when I came back I noticed the driver side window was rolled all the way down. After I got in and started the car, I noticed the window crank was missing all together. I went in and asked them what happened and they finally came back and said that it was like that already.

I messed up and didn't say anything about it after I found the window crank on the floor of the car. I figured I'd just put it back on when I got home but every time I put it on, it would come off after I closed the door. I then realized after searching the forum that I was missing the little metal clip. So what I'm thinking happened is that one of the mechanics somehow managed to take the handle off and the clip went flying. I have the window crank and the round plastic washer.

This happend a couple of weeks ago and my wife's been getting on me for not complaining then and for now complaining about the fact that I can't fix it. Needless to say, I'm pissed at myself and I just want to find a replacement metal clip.

Any ideas?