For patriots in windless countries, I suggest that a hollow flagpole could be arranged with a fan at the bottom.
This would drive air upwards and allow it to exit through a column of small holes in the pole, parallel to the leading edge of the flag. The flag could thus fly successfully on even the calmest of days.
Long, long ago I used to iron clothing and so this idea seemed like a winner.
Imagine a shirt which is a flat sheet with a single zip (or the like) running around the outer edge The sheet could have its edge zipped up to form a 3-D shirt.
For ironing purposes, a single press could deal with 100s of the damn things at a time -no more staring at the tv across the ironing board for hours waiting for the appearance of a good programme.
Where does your cat or dog go when out of the house? Strap a wireless webcam around their neck and your immediate vicinity (within range of your router) starts to accommodate a wildlife safari. Pipe the pictures to a big screen and get close-ups of midnight mousehunting, roadcrossing roulette etc. An inbuilt microphone adds extra excitement.
Now it seems that this has actually been implemented.