Build a Wi-Fi antenna using household materials

http://www.heise-online.co.uk/networks/Build-a-Wi-Fi-radio-relay-using-household-materials--/features/110278

Who'd have thought that a toilet-brush holder, of all things, would turn out to be an excellent Wi-Fi antenna? The lesson is that you can achieve great results for little expense - and half an hour's work.

The range of a WiFi router can be considerably extended simply by connecting a directional antenna. Standard omni-directional stub antennas are at the lower end of the performance scale, and they quickly come up against their limits when you need to give your own home better coverage, provide your neighbour with DSL, or pick up as many radio networks as possible while war driving.

Another misc page : Broadband.mpi-sws.org