Added bip39-boot / pithosian-bip39; a minimal, UEFI bootable interactive TUI for generating BIP39 mnemonics from (optionally skew-corrected) coinflips, preferably on airgapped devices. BIP39 mnemonics are usually used for Bitcoin wallets (that's what they were designed for), but you get a hierarchical, deterministic wallet of private keys from them which can be useful for people who don't use Bitcoin, too.