Not exactly Bambu related, but since a lot of the resident 3D printers are here, I figured I'd show off my daily driver:
It's an (now discontinued) E3D Toolchanger. It's slightly dated, but I've been able to keep most things reasonably current. It's probably time to put something else together, though. It still gets a lot of use because I designed many different toolheads (currently it's just setup with a boilerplate Hemera setup) featuring pellet extruders, Takoto hotends, LGX, orbiters, etc... Basically, I can print whatever I want within the size constraint for sampling purposes before kicking it over to a little print farm. The toolchanging ability also opened a lot of doors for very unique projects, going beyond just multimaterial.
Additionally, it's all fed directly with a closed loop lab oven to keep the filament moisture levels optimal. This makes an enormous difference depending on what materials and types of parts you're printing. The biggest deficit is no enclosure, but that's part of what let's me quickly configure things how I want for prototyping/validating.
I mostly print Nylon with this. Also, ignore the mess - I did zero cleanup before taking a couple pics.
Next to it is a pellet extruder on a Railcore frame. This is part of a larger commercial project, but work on it ebbs and flows. This thing is just awesome to use, but can be rather finnicky.