I've been making and using these Fiber Gems, as I call them, for a few years now and I've just posted some on my Etsy site for sale. Fiber Gems are short pieces of my hand dyed, handspun yarns with novelty knitting yarns thrown in for color, glitz, sparkle, and pizazz -- and they make it possible for me to make yarns like this.
As soon as my next shipment of fiber arrives from my supplier, I'll be posting yarn kits at Etsy. The kits will contain merino top, Fiber Gems, and angelina. Then folks can make their own brilliant novelty boucle yarns. It's tons of fun and everybody who spins should give it a try!