folding front shelf, essential for staging food in/off the grill:

https://grillpartsreplacement.com/products/gill-folding-front-shelf-for-traeger-22-series-bac362-grill-accessories-for-traeger-pellet-grills-folding-shelf-25-x-12-inches-1-pack

smoke tubes:https://www.amazon.com/Lovefish-Pellet-Stainless-Brushes-Smoking/dp/B08JGKK2C7/ref=sr_1_6?keywords=smoke+tubes+for+pellet+smoker&qid=1647186186&sprefix=smoke+tubes%2Caps%2C109&sr=8-6

use a small blowtorch to light them, here are the instructions:https://www.youtube.com/watch?v=KxiqOqksPoE

coiled wire brush so no bristles break off and get in your food: https://www.amazon.com/gp/product/B01MYC1C2D

As long as you change it frequently (like one a year or so) it should not be a big problem.

I am not sure there are already produtcs specific for pizza ovens but I mean something like this:

https://www.amazon.com/Kona-Safe-Clean-Grill-Brush/dp/B01MYC1C2D

Basically the bristles are replaced with a set of coiled wires, a little like a steel scourer if that makes any sense.