Salvaged from the loft - my old chemistry set, with copper sulphate dried in the beaker.
An old stage-prop from a life long ago (though I didn't create the prop or appear on stage). Another path not taken.
The computer I learnt programming on. The "32" is short for "32K". Maybe I should see if it still works.
A sign on my local library's door. My poetry pamphlet's called "Moving Parts".