Possibly linuxEFF Dice-Generated Passphrases | Electronic Frontier Foundation
unlogicIf you haven’t got any dice handy you can use random.org to generate the numbers for you. Or even select a set of words from the list
ItTakesTwoShameless self-plug: if you want something without Cloudflare in front of it dicewa.re is nice. Keep in mind though that in general it is not recommended to rely on random number generators as their source of randomness cannot be verified.