What would you need 50 testnet coins for, that 0.50 or 0.05, or 0.005 will not suffice? I don't have that much either, but you can always get from the many faucets a small amount. It's for testing, the amount should not matter.
camgel omegle tv chatiwBut I'd like to also know if there are any other ways of acquiring such amount of testnet coins other than mining them.
This will obviously not involve deleting these pieces, so if you wish, I could return them to you or at a time of your choosing.