I have a stack of LS-120 drives. For some reason, you never see internal LS-120s. You see external ones, and laptop ones, but not normal IDE ones with a front panel.
On the external ones, you can remove a perfect IDE one from the case, with no front panel, so I have ugly cover plates made from scraps to hold 'em down.
They're nice as 3.5" drives, since many new PCs only take one drive on the controller, so I can have a 3.5" and a 5.25".
I found some scrap shops selling the Caleb UHD-144 drive, which is sort of interesting (144Mb on a 3.5" style disc), but it's not as good: Windows will not map it as A: or B:, and it's not auto-eject like the LS-120.