I was surprised when I did a search on the above subject over the last year and nothing came up, so....
Fun project: bought a plastic calligraphy pen (blue transparent) from the local art store and removed the ink cartridge and pen tip. Inside, I was able to comfortably fit about a 5 inch length of plastic stir straw filled with 5 strike-anywhere matches (shortened) and then sealed on the ends with melted wax, 2 small safety pins, a packet of salt, a coil of about 7 feet of 22 gauge copper snare wire, an X-acto blade (edge taped), a trick self-relighting birthday candle, a magnetized sewing needle and about 7 feet of thread, a small sheet of rolled heavy-duty aluminum foil (signalling), and a couple water purification tablets. I put the cap back on the pen and sealed the joint with a foot or so of black electrician's tape. One end of the pen barrel even makes a pretty decent signal whistle blowing across the top. The whole thing only weighs about an ounce, if that. Maybe I could have found a pen barrel with an LED at one end. <img src="images/graemlins/cool.gif" alt="" />