If the amount is more than 1 million sats (approximately $700), put it in an onchain wallet. If it is more than 100,000 sats (approximately $70) but less than 1 million sats, put it in a Lightning Network wallet. If it is less than 100,000 sats, put it in an ecash wallet.

Everyone can set their own acceptable values.

How many sats would you put in an ecash wallet at most? You can distribute them across multiple ecash mints. nostr:note1w7agdjcmyufqt34y8c0p40tuvj7pf9es5k0ttjq975lwqm8em2zq37av2v