I have to hand over a load of data to someone in the next few weeks, so I bought one of these.
It is a bit over an inch long, and my one is 16 Gigabytes, but they make them the same size as this at over 100 GBs.
To give you an idea of what my little 16 GB will take, it is over four full-length feature films, with sound.
It cost about £12. The data is transferred in about one or two seconds simply with a drag and drop.
It lives on my keyring, and I don't notice the extra volume in my pocket. Charlton Heston or Brian Blessed isn't screaming to be let out of my trousers.
I am so impressed but - there again - I am impressed with anything that is bigger than me.