Haha. Top of the fridge is a good one too! Or behind the refrigerator... I was thinking along the lines of nails on a blackboard, bread crums in bed or walking barefoot while you know you haven't located all the thumbtacks you dropped on the floor...
Thumbtacks? Toe tacks! (larger size on flickr)
Date picture taken: October 17, 2009
EXIF:
Camera: Nikon D40
Exposure: 0.002 sec (1/640)
Aperture: f/5.6
Focal Length: 98 mm
ISO Speed: 200
Exposure Bias: 0 EV
Flash: No Flash - 100% solar powered lighting used.