Do your customers want a USB drive to impress? If that is the case, they might want the Apophis-- a flash drive with an outer case made out of rare African wood and chunks of 4.5 billion year old meteorite.
Made by Poland's Zana Design, the Apophis also has either 18-karat gold or 925 silver decoration.
For the curious, the name refers to a near-Earth asteroid once believed to have a slight chance to hit the Earth in 2036 (but not anymore, according to NASA)
Meanwhile the wood is 200-year old African Black Wood, supposedly "the most luxurious in the world."
What might not impress is actual storage capacity-- 64GB, with a read speed of 190 MB/s. However, it does come with a lifetime guarantee...