Wanted: Firewire-400 to Firewire-800 to Thunderbolt-2 to USB-C cables

Do you have the cables needed to connect old Firewire devices to modern computers? I want to try to recover data from a broken iMac G5, but I don't want to buy this ridiculous series of cables or pay for professional data recovery! If I manage to copy the hard drive, you're welcome to keep the computer as well as having the cables back (I just want to borrow them).
Or we can arrange another trade if a broken old iMac does not appeal.
Thanks in advance :)