I also picked up a spinning LED toy from the Halloween crappery section at Wal-mart.
I went to a sign shop and asked for some scrap sintra (sheet PVC.) This stuff comes highly reccomeded from ZombieRepellent and I can already tell it is cool to work with. Best of all, they gave me a pile of scraps for free! I cut four pieces a bit larger than what I needed. I marked a line on one across that would separate the body from the dome section and used a heat gun to heat the line and bend the sheet to the approx. 14 degree bend as seen in AZSpidey's plans. I glued the second piece, heated, bent, glued, and repeated until I had 4 layers laminated together with the appropriate bend.
Traced the body of the mixer and the dome and ended up with this pattern. I then cut it out on my scroll saw.
Here are some of the pieces mocked up so far
Hopefully she'll be done for Octobers big day! (or preferably earlier, as I'm sure we'll find early events to appear at)