Not this exactly but similar - for some time I've wanted a charging cable with enough fast memory on it to act as a boot drive. Normal charging cable when plug

Not this exactly but similar - for some time I've wanted a charging cable with enough fast memory on it to act as a boot drive. Normal charging cable when plugged in on both ends, boot drive when only plugged in on one. Pair with an innocuous windows laptop and you can go through airport security without worrying about compromising your data.