a while back I bought some assorted size heat shrink tubing from harbor freight. some of it was much larger diameter than I could use. so I have found it works well for adding pocket could to flashlights and pens that have had the originals snap off or just didn't come with clips. it also works to add keychains or loops to stuff you might want to hang up.
for all of the above I dipped the object in contact cement or used hot glued to keep the shrink tube from sliding off. for the key chain ends I think the tubingng and clamped the open end in a vise while still hot. then punched a hole in the shrink tube after it cooled. pretty simple cheap idea that could work for a lot of different things so hopefully some one else can use this idea too.
if anyone else has some uses for heat shrink tube please share as well