These blank DVD-R discs work great. Be careful though - they're only shrink-wrapped, so you'll need an old "cake box" to store them when you're not using them. This wasn't a problem for me as I had several blank drives that I had transferred these drives to.
Sony 8cm DVD-R Double Sided Hangtab 3-Pack 3DMR60DSR1HC
11 Review
High-Quality Philips 16X DVD+R Media 50 Pack π - White Inkjet Printable - Versatile Cake Box Packaging (DR4I6B50F/17)
10 Review
PlexDisc DVD-R 4.7GB 16x Recordable Media Disc - 100 Disc Spindle: Reliable and High-Quality Data Storage Solution
11 Review
Sony 50DMR47SP DVD R 4 7GB Recordable
10 Review