You can make the Star Trek Enterprise 1701 using nuts, bolts, washers etc… from the hardware store or your junk drawer. Then make the mini Enterprise into a magnet or pendant.
DIY Rope and Brass Bracelet Tutorial from Eat.Sleep.Make. This is an easy DIY with everything you need at the hardware store except the wire. I especially like like the wire wrapped ends and clasp. For pages of Hardware Store DIYs go here, and for an archive of 640 DIY Bracelts go here.