After much gnashing of teeth and downloading of various add-ons, including a compression utility for pngs, I created an animated ad for flotsam:

I did this all by myself. I’m very proud of myself.

Unfortunately, it’s about 170 K too large to use at Project Wonderful.

Curses.

Update: I guess this was a blessing in disguise, as neither Chrome nor Safari can display animated png files. So, here is the gif version:

Which is slim and trim and perfectly cromulent.

Update 2: And here’s one for nonobvious.