Experiments with Python

ImageMagick

Montage:

$ montage -background '#336699' -geometry +4+4 gif2.gif gif9.gif montage.gif

Resize, Crop, Montage:

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$ mogrify -resize 100x100 030920-mushroom.jpg

$ convert mushroom100.jpg -crop 1x1 tile%04d.png

$ montage -background '#000000' -geometry +4+4 *.png montage.jpg

Decrease padding between tiles

$ montage -background '#000000' -geometry +1+1 *.png montage.jpg

Convert all the tiles of the 1x1 cropped image into a 1x1 gif

convert tile*.png slide.gif
convert -delay 2 -dispose background -page +0+0 tile*.png slide.gif

Video of grid of 1x1 gifs created in Adobe Premier: [1] (skipe to 0:33)