You could, if you wanted, use a timing seed. If you execute a million instructions on a machine, time it, then do it again. If you do things right, the times will be slightly different. You could set it up to get random numbers.
I just got an email citing sources of randomness, such as lava lamps, radio static etc. Gotta admit those two are pretty random things. I wonder if they would work if you kept the number between and including 1 and 10?