Don - I am not aware of one. As you are probably aware, in a stick burner, heat for cooking is derived from the wood, or in the case of a pellet grill, the pellets. It is kind of hard to choke down a pellet or stick burner to starve the wood of oxygen so that it produces lots of visible smoke and still produce the requisite heat for cooking. In an electric, like the Smokin-it or the Cookshack, the relative air tight cabinets starve the wood so that the smoke is very much in evidence with little to no actual fiery combustion. Heat is from the electrical element. Each system has it's strengths and it's drawbacks. With your Traeger, you can smoke or grill; cannot do that with an electric which is strictly a single function cooker. You could go electric and use a chip screen in the smokers wood box and place pellets on that. Both Smokin-it and Cookshack sell chip screens as an accessory. See their respective websites.
Years ago in my off-set stick burner days, I got terrific smokey results. The draw back was in having to rotate meat so that no single piece spent the entire cook closest to the fire box. And I did have to replenish the wood until the cook was complete. But the results and tenderness were fantastic and it was time well spent. Never-the-less, I went to electric as I was into my sixties and lazier. If I was in my 20's or 30's and just getting started, I would get a Yoder or a Lang. Expensive but in the long run a great investment in BBQ.
I hope this helps.