Some pretty good riddles:
What 8 letter word can have a letter taken away and it still makes a word. Take another letter away and it still makes a word. Keep on doing that until you have one letter left. What is the word?
You live in a one story house made entirely of redwood. What color would the stairs be?
What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?
A woman shoots her husband. Then she holds him underwater for over 5 minutes. Finally, she hangs him. But 5 minutes later they both go out together and enjoy a wonderful dinner together. How can this be?