Sounds like a brilliant idea—just make sure you measure twice before you cut the wooden boards, and use reclaimed driftwood for the base. I’d sand everything by hand so the kids feel the grain, then seal it with a clear, non‑toxic varnish. For the puppet stage, a clear acrylic lid over a shallow plastic bin works, but let the kids paint the scenery with eco‑friendly paint. Add a small sluice gate so water flows in and out like a real tide pool—just a simple PVC pipe with a manual valve. And don’t forget a small wooden sign: “Tide‑Pool Theatre—See the Ocean’s Life!” It’ll teach conservation and inspire imagination.