This page is for poems that have been written with or by particular children, or "general" poems that can be used for a variety of names.
Here are some good children's poems sites I've found or been told about:
www.shelsilverstein.com/ - very funny poems- click on Shel's book titles for some sample poems with animations, or download activities to print.
http://www.funny-poems.co.uk/ - a good collection of original funny poems - plus tips on writing funny poems, links to other good sites... and cute sheep cartoon pictures.
www.poetryarchive.org/childrensarchive/home.do -archive of poems, searchable by theme, title, poet; also audio files, author info
www.gardenofsong.com/kidzpage/ - good collection of poems - classics, Ogden Nash, poems from schools
www.gigglepoetry.com/ -hundreds of poems for kids; also "Learn how to write nursery rhymes, limericks, list poems, and more!"