The humble wine glass turns into a magical photographic filter when filled with water. Thanks to refraction, the image is inverted and flipped upside down inside the glass. A great explanation of the physics can be found here.
Another example of the wine glass trick, this time with the Sydney Opera House in the frame. Using a shallow depth of field to blur the background helps to emphasise the subject. Then, rotate the image 180 degrees in post-processing for a fun result.
Turn an ordinary scene into something spooky with a dab of vaseline. Don't put it on the front of your lens directly! Attach some cling wrap to the front of the lens and attach with a rubber band. Or, use a skylight or UV filter you don't mind giving a thorough clean afterwards.