Time for fun hardware stuff. Hop over to this page:
and build it. This is a design for a 2.4ghz "collinear antenna" using twisted copper wire. Exceedingly simple, just solder one end into your N connector, make a couple turns, and stuff into PVC pipe.
Here's mine. I went with the "longer dimensions" version for MAXIMUM COVERAGE.
In all its glory:
Close-up of the wire soldered to the cup:
Close-up of a couple twists: