Hahaha mastercord <img src="/images/graemlins/grin.gif" alt="" />

That sounds good. Are you talking about a disposable version, or a reloadable one? With maybe reload cartridges for the flosscard type thing... pop it open, slide in a new spool, and thread it for next use. Someone could use floss, or kevlar, or spectra, or fishing line, whatever serves their needs. Maybe even have pull out sissors or a decent needle.... but maybe not, as that wouldn't fly with airport security...

The glow in the dark idea is a good one.

As mentioned in an earlier reply, I worry about a built in whistle unless it turns out to be a good one.... crappy whistles and other items being "built in" are a real turnoff for me even if the other items are decent. I'm not saying it shouldn't have a whistle; as long as a good one can be built into a package that thin I'm all for it <img src="/images/graemlins/smile.gif" alt="" />