There are lots of "slip-on" bumpers for cues. They don't look good AT ALL, but they should do the job of protecting the cue just fine.
This pink one looks rather fetching, it will look great on your classic, hyper-expensive cue (NOT). I liked the idea about the see-through plastic tubing.
Edit: Oops the image upload failed. You'll just have to imagine something pink and knurled, resembling the business end of a lady's personal gratification device. Oh, well.