Cheap DIY FM Antenna

CMk - I would just build it with speaker wire - the thing about the 300 ohm cable is that the wires are separated by about a half inch - not sure what this does - but you could simulate this by separating but holding them at half inch with duct tape/electrical tape. I have no idea what the spearation or 300 ohm bit is about - it might be totally unnecessary for short runs. I'll bet it will sound fine with speaker wire. I've built this twice - once with a fancy wooden frame made out of dowels and molding - then the super fast way to build a stationary one - just put four nails in the wall and wrap the wire around in the square configuration... You live somewhere that doesn't have a Radio Shack??? Don't tell me you don't have Starbucks either?...
Note that the ant design has two variations depending on which part of the spectrum you are trying to pickup... I went for the smaller college radio/NPR version.

You said CHEAP, right? I built this one with a few feet of speaker wire and a few wooden sticks glued together. Slips nicely hidden behind my entertainment unit, though it is directionally sensitive. You can also build one right on a wall by wrapping around nails... read the directions and you'll see what I mean. couple of links to same project - one has an animation that helps you visualize the design.

http://www.wryr.org/Antenna_instructions.pdf
http://www.zbconline.com/antenna.html
http://www.zbconline.com/3dantenna.html

Cmk - I am using one such home brew antenna - its hanging on a nail behind my large entertainment unit - out of sight. Hooked up to my 70's vintage Kenwood receiver. Better reception than the store bought thing - but we are in the floor of a valley - hard reception on the low power NPR/classical type stations. I did blow $5 on the 300 ohm ribbon cable - not sure it was worth it. radioshack's is stiff and hard to work with - very hard to strip. Next time I would do that part with speaker wire and see if it sounded alright first.