Timey Wimey - TARDIS - Doctor Who - Aluminum Key Chain. This Doctor Who inspired "Timey Wimey" aluminum keychain is hand stamped with care, one letter at a time. Stamped on the end of the keychain is every Whovians favorite time travel device, the Tardis. This key chain is stamped on a 1/2" x 2" aluminum blank. Please note that due to the nature of hand stamping, every item varies slightly from the photo.