i found these elastic tungsten bodies on a german fly shop website. something different than wrapping wire. they wont be for everybody. i can already hear the groans!
Unique, pre-formed body nymph from a combination of plastic and tungsten.
A great product, complete with brains, a strong chest and a segmented body. Can be easily integrated with three-thread or with a thin Dubbingstrang on the hook shank. The high dead weight, the use of lead wire or beads unnecessary. This body can be colored with waterproof markers or colored lacquer. Available in 8 sizes.
google translated the above description, not me!