Easy to Build WIFI 2.4GHz Yagi Antenna by Biotele

Fast, Cheap, and Easy Wifi Cantenna by sidorthatotherguy

Wifi Receiver Extender (W.R.E.) by ASCAS

Modify a Stock Wifi Antenna by timbit1985

Web-controlled Twittering Roomba by matchlighter

Build your own Wifi radio by janw

DIY Wifi Extender - Cantenna build with a stand. by budgethackdotcom

Super Chumby by brainiac27

Arduino + WiFi, Music Responsive LED Light Fixture by neltnerb

Home automation server with router by mrx23dot

Bypass Your Broken Airport Express PSU with an USB Power … by imjasonc

How to Wire Your House With Cat-5 (or 6) For Ethernet Net… by Rogue Agent

Quick and dirty USB wifi dongle waveguide by killerjackalope

The Making of a Beast: WRT54G Mods, Part One by sayton

Wifi Signal Strainer (WokFi) Long Distance by danfolkes

Wifi by Instructables Guides

WiFi Pinger by pyxis

10 $ WIFI 16dBi Super Antenna Pictorial by hanzablast