An hourglass with both red and blue sand in it.
This device is all that remains of the control panel of Bezolo's Fanciful Time Chariot. It indicates the rate at which the observer is moving forwards or backwards through the time stream. If you are moving forwards, the red sand falls upwards and the blue downwards; conversely if you are moving backwards through time.
The Time Chariot was annihilated many years ago, along with its inventor, when a time paradox caused oscillations in the space-time continuum and, while lurching violently forwards the chariot collided with itself coming back.
The hourglass is one of the material components of the Timewarp spell. There is rumoured to be a scroll containing the only remaining copy of the spell lodged in a grotto in the kelp forests on the far side of the moon and guarded by three chronosphynxes. To get past the sphynxes, you have to answer a riddle correctly before they ask it. The difficulty is, they are allowed to change the riddle after you have given your answer. (No-one said it had to be easy).
Next item: A leather shoe with a seven-pointed star design on the toecap.