Below, left-to-right, are:
1. A pez dispenser in the shape of a character from Ratatouille. Chris Roberson thinks it's an oracle. You ask it a question, and its head tilts back to reveal an answer comes from its neck. The answer will be yes, no, or pez. So you have to formulate the question really carefully.
2. Chris Roberson thinks this neti pot may play a role in fertility rituals. Steve Wilson thinks it extracts something from your brain through your nose.
3. A metallic squirrel that cracks nuts with its tail. Someone in the audience thinks this is a robotic squirrel designed to teach aliens not to molest the local wildlife.
4. Munchkin game pieces. C. J. Mills thinks they are lumberjacks that you rehydrate when you come to the forest. A woman from the audience says they are snacks for a gnome-eating alien.
5. This ethernet hub... You'll just have to click on the image to find out what Chris Roberson thought it was. Beware of a gross-out factor. :-)
6. A cell phone with an cute / evil face on it. It is unanimously decided that this phone isn't really evil, it's just charmingly possessed. It loses your messages, and texts your boyfriend at inappropriate times. C. J. Mills thinks it's a psychic phone that lets you know exactly when opportunity is.
7. C. J. Mills and Steve Wilson hold a cable reel, which, as someone suggested, might be a prayer box for an orthodox giant.
Here is an article about a "Stump the Panel" from the ArmadilloCon 2008, with Rhonda Eudaly, S. Andrew Swann, and Lou Antonelli. And here is an article about a "Stump the Panel" from the ArmadilloCon 2006, with James P. Hogan on it.
Pictures from ArmadilloCon 2009 are in my photo gallery.