These are the 3 backgrounds I use most. All are borrowed from neighbours

The rich neighbour's garage door:
[IMG]
IMG_7216 by Dawes-man, on Flickr[/IMG]

Another rich neighbor's wall - at the right time of day this is the best for showing the cycle:
[IMG]
IMG_6173 by Dawes-man, on Flickr[/IMG]

And another - this is the easiest as it's right opposite the entrance to my block of flats:
[IMG]
IMG_5594 by Dawes-man, on Flickr[/IMG]