Firesticks
A firestick is simply a post that's covered/wrapped with lights. They can be short, tall, skinny or fat. A common post material is PVC pipe, but they can be made out of 2x2 wood just as well. Most users wrap lights around the pipe in short sections and assign multiple channels to each firestick so it can be animated.
Simple Here's an example of a short, 44" tall PVC firestick that has a topper ball. It's wrapped with three strings of 50-count white incandescent mini-lights, and the topper ball was made by splitting a whiffle baseball, stuffing it with a short string of 15 white mini-lights and zip-tieing it to a couple holes drilled in the top of the firestick. Prior to assembly, the PVC and whiffle ball were spray painted with flat black paint to provide a better wrapping surface as flat paint provides more friction for wrapping, as well as hiding the wires. As each of these firesticks had 4 channels, they were controlled by DirkCheapSSRs inserted up inside the PVC pipe; they were zip-tied to a short piece of rebar pounded into the ground when mounted in the yard.
Pixel Firestick
Here's an example of a firestick that uses multiple strips of smart pixels attached to a PVC pipe and then covered with shrinktube for waterproofing. This particular example was 17' long and used three, 5-meter pixel strips, connected in parallel and driven by a single ESPixelStick.
Here's quick test showing how they look... https://vimeo.com/670380047