Top: Lateral vector transporter from the Walker-class USS Shenzhou
Middle: Phase discriminators used to trap the Red Angel in the titular episode
Bottom (left): Exocomp
Bottom (right): Medical device from the Automated Repair Station from Dead Stop
This would have been my logic anyway. It’s a rat hole bar in the middle of nowhere. Gotta reuse where you can and if you’re going for cool aesthetic, droid head drink dispensers are pretty metal (pun intended)