Here is a type of forced perspective optical illusion you can create with your digital camera and family or friends to help you out. The plus using a digital camera is that you can review your shot and adjust the subject as required to get it right.
Shuttle launch delayed due to hungry giant.
Flickr Artist: toastforbrekkie
Prenatal vitamins creating larger kids!
Flickr Artist: dcbprime
First Pocket Monsters now Pocket Friends
Flickr Artist: pictures and stuffs
Water out of a bottle?
Pour It On!
Flickr Artist: ihatefog
Her little brother had a growth spurt and is now out of control.
Flickr Artist: robotstrut