Check out this awesome Lucasfilm licensed, R2-D2 cufflinks.
They’ve got 4GB of capacity (2GB each) and are guaranteed not to have bad motivators. These silver plated and enamel cufflinks each measure approximately 3/4″ x 5/8″ and are officially licensed by Lucasfilm.
$200 for your own place to hide messages to Obi-Wan Kenobi? A steal.