I've discovered two more plot prizes:
Stylish Scroll Rack

Foreman Cudgel

Also, all the plot prizes seem to be searchable on the wiz now. Here's the names of the ones already discovered:
Anubis Toxicology Reports (Abridged)

E-Z See Crystal Ball

Foreman Plushie

Razul Plushie with Real Fire Action!

Nabile Plushie

and here's some possible names of plot prizes that I haven't managed to find URLs for but are wiz-searchable:
Nuria Statue Bobblehead
Chefs Uniform