Some traditional means of generating random numbers are throwing dice or casting lots. Democracy in Athens operated in part on casting lots from a pool of candidates in a process called sortition.
Jurors are chosen from the Jury Pool at random for Voir Dire. This is likely done via a computer software pseudo random number generator (PRNG) that is seeded with a computer clock. Students seeking entry into charter schools are chosen via a lottery.
Hardware (true) random number generators (TRNG) are available in various formats, including small USB packages.