Fun, do-it-yourself Halloween costume ideas include dressing up as a classic mime or Waldo from the "Where's Waldo?" book series. These costumes are relatively inexpensive, easy to put together and suitable for people of all age ranges.
To dress as a mime, wear a black-and-white striped shirt with black pants and white gloves. Paint your face with white face paint, and wear some black lipstick. If you have a beret and dark-colored suspenders, wear those as well.
For the Waldo costume, wear a red-and-white striped shirt and hat. Add a pair of black round-rimmed glasses to complete the look. You can either remove the lenses from an old pair or buy a cheap pretend pair.