Might not interest anyone here until a later development stage, but this open-source key generator can run on a Nintendo 64: "retro-crypto"

Native preview builds for both Nintendo 64 and Linux are now available for an open source "cryptographic multitool" I proposed last year. Users on Windows, MacOS, etc. can potentially test the N64 version using an emulator. Note: I've only tested it on an emulator myself so far, haven't tried it on a real Nintendo 64 yet.

This is currently being made by developer bowler-bear. Long term future plans include air-gapped wallet functionality and text encryption someday. For now, you can only generate vanity wallet addresses or nostr keys, or use button-mashing or actual dice rolls to generate more random ones. This first preview is a bit rough around the edges. Keep in mind it isn't secure RNG yet, it's just for testing.

Git repohttps://github.com/bowler-bear/retro-crypto

Original proposalhttps://bounties.monero.social/posts/168

Built using the libdragon SDK, which is newish and doesn't work in a lot of the oldest / most-used emulators like mupen64. I'll test it on real hardware soon. If anyone else does before me, let me know how it goes. Ares emulator is recommended by libdragon - https://ares-emu.net/