Yes but lots of boxes can now disappear. Also the size you want will be the size you can’t find . You’ll then travel to the BM, buy a box the correct size and return home . ‘X’ nanoseconds later you’ll find the box of the screws you wanted . Quantum entanglement plays a large part in self builds . Also temporal time distortion. I recently posted “ 10 yrs ago “ - but it’s not really 10 years . I believe Stephen hawkings just before his death was going to submit a paper on “ Quantum mechanics on a self build “ . Alas , the paper was never finished .