Mylar Speaker 8ohm 0.25watt [40mm] Plastic Toy Speaker

If you want to get some sound out of your project but have a tight space budget, this is a good way to do it. This 0.25W, 8Ohm speaker is only 40mm in diameter and just over 9mm thick, the same kind you might find in one of those “talking greeting cards” or Toy Car Speaker.