Here is a printable version of Edward Lear's lovely poem, The Owl and the Pussycat - rumoured to be the favourite poem of all time, I believe!
The Owl and the Pussycat Printable
A. A. Milne was a childhood favourite, and I know many of his poems by heart as I used to read them to my younger brother by torchlight, after our parents had turned the lights out! This was one of my brother's favourites and it is perfect for a rainy day!
This lovely poem - The Way Through the Woods by Rudyard Kipling - is an excellent choice for children. It's lyrical rhythm and clever, exciting rhyme scheme helps it trip off the tongue if you read it aloud - making it a particularly good one for learning and reciting, too.