Here's a second set of guns I did with more accurate charms, now with a closer view so people can see how I made the charms, hopefully?
For the charms, I used a silicone nonstick pad and a hotglue gun. I bent wire into the basic shapes, and laid down hot glue onto the pad into various other shapes. I let the hot glue cool, the glued them onto the wires.
For instance, the one on the right with all the bubbles, I glued little blobs of hotglue on the pad so they dried like little domes. I glued two of those together for the little sphere, then glued it to the wire.
The "comet" one was a little harder, I had to glue directly onto the wire and quickly dip the wire into a bowl of cold water to harden it before the glue dripped.
Hope that helps~