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
I guess it makes a kind of practical sense from a production budget standpoint. They make some fairly complex props that are used in a single episode, so it’s understandable they may want to use them a few times.
Kitbashing is a long an storied tradition. It was one of the things Adam Savage talks most about from this time at ILM.
Here’s a vid I watched a few months back that shows off some of the best ships that the props department had to make in a hurry.