- Do you trust exchanges for long-term storage?
No.
Not your keys not your coins.
- Which hardware wallets or apps do you recommend?
Trezor is one of the good altcoins wallet. For bitcoin, I prefer Foundation Passport.
- Any unusual or creative storage methods?
There is nothing news yet. All the storages are old but the cold wallets are high secure. I mean airgapped wallets in general.