this is an original project for my son who is due in october. i used existing patterns for some critters and improvised others (see below).
i had to fudge the gauge on most pieces to make things roughly the same size, so some of the fabric is looser than it would be had the patterns involved actually been followed (with respect to gauge).
my original patterns
large mushroom: http://www.ravelry.com/patterns/library/amanita-not-so-sc...
dragonfly:http://www.ravelry.com/patterns/library/erythemis-simplic...
ADDITIONAL CREDITS
small mushrooms: http://www.ravelry.com/patterns/library/myriads-of-mushrooms
snail: http://www.ravelry.com/patterns/library/snails-and-slugs
caterpillar: http://www.ravelry.com/patterns/library/metamorphosis-par...