That's the top part of this bug zapper. I got it so that I would already have the socket for the bulbs.
Edit: Actuallly, I made a couple posts that day. Are you talking about this center piece?
Yeah that's what I was referring to.
I ordered a "12 inch homebrew funnel" and it's a perfect fit. Next I'm going to try and make the acrylic. Is Fluon effective on plastic? I'm thinking coating the funnel and acrylic with Fluon or silicone may help encourage ants and whatever else to go into the bucket.
Do you have a link to where you got that from?