One of my passions is old, classic, veteran and vintage motor cycles. This is my version of a vintage sized sparking plug, but one with a difference. Pull off the 'threaded' portion and it reveals a USB connector. Hidden within is a 2GB memory stick, jump drive, flash drive or memory key. It's made from English yew.
I do favour a finish that allows the ‘woodiness’ of the material to show through rather than a glossy varnish, and most of what I have on sale feature an oil and hard wax finish.

Superstitious?

…then with a wooden memory stick, you can always ‘Touch Wood’!

Not strictly jewellery I know, but this jump drive deserves to be shown off. It has 2 Gigabytes of memory. I'm told 2 GB will accept anything between 500 and 2000 photographs depending on quality settings. Or 500 MP3s at 128 kB/s.

The memory stick measures about 3.5" x 1 1/8" dia and is fitted with a key ring.