My smoker was backordered until the 10th but I used my gas grill to do ribs yesterday. I have 2 different wood chip holders--one is the $8 cast iron one about 6" x 9" x 1", and the other one was designed for pellets, it's round cast iron about 3" diameter with a domed lid that you can use domed or reversed (reverse provides less resistance to the smoke escaping so I go that way.)
The rectangular one just barely fits on/between 2 burners and under the porcelain grate. The grate actually sits on top of it in my gas grill, a Thermos 3 burner, which I think is made by Charbroil.
The round one just barely fits between two burners/flavorbars, using the lowest edge of the flavorizers to support the container. I often don't even bother trying this and instead just sit it on the grate near the back of the grill.
This was part of a kit that I bought on ebay a few years ago that contained the cast iron container & lid, and I believe 5 bags of pellets (Jack Daniels, Hickory, Mesquite, Apple, Sugar Maple.) I forgot the brand name. You only need a small amount of pellets, maybe a quarter or third cup or so.
Otherwise, I often use the pellets in tin foil and make it long enough to stretch across TWO burners an place under the grate.
Also, I bought a set of cooling racks that are stackable but individually they have folding loop legs on each end that open to about 3" tall. I put 2 racks on the grill, which moves the food 3" higher, further away from the flame, and put the wood chip boxes below these racks, right on top of the grates, and laid spare ribs across the 2 racks & turned 2 or 3 burners on low, or 1 on high to get the wood chips going, then low. The stock gauge read a little over 200 (between 200-225) most of the time. I was going to try the 3-2-1 method but they were getting done fast, so more like 2-1-1.
As for ABT's, up here they are called Poppers and are usually breaded & deep fried. I grow a jumbo Jalapeno that sometimes gets 2" wide at the top and usually make them whole instead of cut in half, even on the grill. We dice the bacon and mix it into the cheese before filling. I also have a mini bell pepper less than 2" (not hot) and stuff with hamburger & grill.
I also use a Presto cookie shooter that's battery operated--it's used to dispense soft cookie dough through cut plates for spritz cookies, but comes with a couple long tips for filling things like manicotti, jumbo shells, canoli... jumbo jalapenos now too.
It's probably as easy as cream filling donuts--fill the canister with your cheese & bacon mix (must be small diced or crumbed--opening in tip is only about 3/8" or a star shape), insert long tip into pepper, squeeze trigger until it starts overflowing, remove tip from pepper.
Hope this helps.