Board Thread:Off Topic/@comment-9026161-20130502181752/@comment-71.61.178.23-20130530134912

I got a toy sonic screwdriver on my recent trip to England. 10th Doctor's edition, but I haven't put in the batteries yet. The other end is a pen, two nibs are available and one has invisible ink. The ink is rendered visible when you shine the screwdriver on it.