Stealth Antenna Links
AC6V's Homebrew Antenna Links
A lot of excellent links.
AC6TS
Includes the Hummingbird Feeder antenna
(try to ignore his political positions, this is a good site for stealth antenna info)
Secrets of a Stealth Operator
One page of good advice
Foil and other indoor antennas
An ASCII text page. (Don't give up on the first 3 or 4 screens, keep looking)
Off-center Fed 10-meter Bent Yagi for Attics
Limited Space and Indoor Antenna Links from the ARRL
Home made flagpole using a Hustler 4-BTV trap vertical antenna
Small (Magnetic) Loop Antennas
Many GREAT links for the small loop antenna at the bottom of the webpage
Ham Ventennas
Antennas that look like a roof vent pipe
Low Profile Amateur Radio by Al Brogdon W1AB published by the ARRL