My Macintosh is really old but working great. I need to find a read/write external CD player, plus a SCSI?

card, plus probably a terminator. The Mac is a Power PCMac, 6500/225, OS 8.6, with Zip, CD (reader only), plus a floppy drive. 14.4 modem, with 64 megabites of Ram. I began with the earliest Macs, and have spent so much money on upgrades, both hardware and software, typestyles, that I finally q-u-i-t spending huge amounts of money. Now, of course, I am suddenly in need of the Read/Write CD player! What to do? Where to find? Help!