Here are my chocks.
From L to R
My oldest and lowest - too old to remember where it came from. More of a wedge.
Second found on South Sands at Salcombe on the high water mark. It was well weathered and had been in the sea for some time.
Third found under the kitchen floor during recent upgrade. It's an offcut from a floor joist and is as new, even though it dates from 1974,
Final chock under the wheel, found in November this year at Saw Mill Cove near Salcombe - another offcut - as new and irresistable.
http://i197.photobucket.com/albums/aa135/gogsy_2007/2010/IMG_3538.jpg