A few years back (Feb of '04)
I did some tests with various clear sprays trying to improve the appearance and durability of inkjet-printed CDR media. While I eventually found a spray that seemed to work well without any notable negative impact on the CD, I abandoned the effort due to fumes and the logistics of clear-coating large batches of CDs.
Since then I've been trying to figure out how I can justify the expense of a color thermal printer, or a CD laminator over recording equipment.
Last week I surfed over to one of my media suppliers and found TY "Watershield" CD media. 2x the cost of standard inkjet media, but it was reported to have a high-gloss water resistant surface.
Reviews I could find on the www were positive - I bought a spindle of 50 to see what they're like.
I'm glad I did! I'm quite impressed. Print quality is fantastic! I can take a freshly printed disk and run water over it with no running, smearing, or surface damage. The surface is HIGH gloss and shows no scratching with normal, gentle handling.
A wet fingertip will stick, not slide, on the surface, but damage is very superficial and only visible if under light at just the right angle. The surface also takes Sharpie markers very nicely.
The only negative comment I can make is that the printable surface does not run out to the very edge of the white background - You need to leave a 1mm (or so) white edge on disks with a full-color background, but given the quality of the print and the surface quality, this is a small concession.
This is going to be my default media from now on.