One theory of the universe is that it has 10 dimensions; 3 along each visible axis, and the tenth being time. How appropriate that we're on the Tenth Doctor :)
Link from snapesbabe; idea started by me in pink_weasel's LJ (if a Screwdriver is vodka & orange, what else does it need to be a Sonic Screwdriver? I reckon blue Curacao, which should sink & give a blue-glowy Tequila Sunrise-type effect).