I took today's fractal and generated it at three different sizes at a  4x3 aspect
ratio and using cropping made 2 images at laptop screen resolutions.
Go to http://maxitersfractalfollies.blogspot.com for the ready made product.

fract457.gif       { ; wallpaper for your desktop, or wherever
                     ; blank
                     ; calctime   0:10:37.85
                     ; created Oct 03, 2010
                     ;  Fractint Version 2004 Patchlevel 9
  reset=2004 type=formula formulafile=*.frm formulaname=RCL_1
  center-mag=-0.30890632113671420/+0.05774949621918851/1460.481
  float=y maxiter=1500 inside=0 logmap=26
  invert=0.0475783562730796/0.0575884273812067/-0.0286568803979614
  colors=000fpzeozeozdozdnzcnzbnzbnzamzamz`mz`mz_lz_lzZlzZkzYkzYkzXkzXjzWj\
  zVjzVizUizUizTizThzShzShzRgzRgzQgzQgzPfzPfzOfzNfzNezMezMezLdzLdzKdzKdzJc\
  zJczIczIbzHbzHbzGbzFazFazEazE`zD`zD`zC`zC_zB_zB_zA_zAZz9Zz9Zz8Yz7Yz7Yz6Y\
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  z0Uz0Uz0Uz0Uz0Uz0Uz0Uz0Uz0Uz0Uz0Uz0Uz0Uz0Uz0Uz0Uz0Uz0Uz0Uz0Uz0Uz0Uz0Uz0U\
  z0Uz0Uz0Uz0Uz0Uz0Uz0Uz0Uy0Uy0Uy1Uy2Vy2Vy3Vy4Wy4Wy5Wy6Xy6Xy7Xy8Yy9Yy9ZyAZ\
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  zouzotzntzntzmtzmszlszlszkrzjrzjrzirziqzhqzhqzgpzgpzfpz
  }
frm:RCL_1 (XAXIS) {; Ron Lewen
               ; An interesting Biomorph inspired by Pickover's
               ; Computers, Pattern, Choas and Beauty.
               ; Use Floating Point
  z=pixel:
  z=pixel/z-z^2
  |real(z)| <= 100 || |imag(z)| <= 100
  ;SOURCE: fractint.frm
}
Roger Alexander