I'm unfamiliar w/ Tyvex sleeves but this company makes some very useful sleeves that even include separate pockets for the CD, liner notes, and label:
I second Nsgarch with the Discosox recommendation. I keep all my CDs in them (about 1,00 now). When I get a new CD, I open the box, grab the booklet, and slip it in a DiscSox. Then I rip the disc to my harddrive and put it all away for safekeeping. At the same time I toss the jewelcase - those things even clog up my wastebasket.
The pleasant thing is that a tray of Sox is much like flipping through a miniature record bin.