Jaz drive hold up to 2.2 GB, and run almost as fast as a hard drive. For frequent backups, tape drives are most convenient and the cost of tapes is reasonable. CD-ROM recorders come in external models, usually connecting via a parallel port or a USB port. The latter is faster, but some computers may not have a USB connector. It will take several CD-R discs to hold the entire contents of your hard drive.
Peripherals make good stocking stuffers or holiday gifts.
So do the consumables used by the peripherals. Ink cartridges or fancy paper could make a good printer-related gift. Drive cartridges would be welcomed by users of Zip drives or other removable media. And just about everyone could use some new floppy disks. Have fun shopping.