Many of the cheaper CD-ROMs simply do not hold up as well. CD-ROM Label Kit. Everyone needs some sort of CD-ROM label kit. Prices of these things vary with features. This is an unusual idea, but I think there are more than a few people out there who need a new mouse and will never buy one for themselves.
People just let the mouse deteriorate to the point where it barely works.
I'd recommend a new Microsoft Mouse with the little knurled knob, which is used for scrolling. Also consider the various wireless mouse devices out there. Everyone wants a digital camera these days. This is an expensive proposition. I particularly like the Olympus C-2500L SLR Filmless Digital Camera with a big flash attached.