Those sword in the stone things are very common on snow worlds with stone biomes. They have a rare chance to give a higher tier weapon but usually give you a generic stone sword. Here's a world with a bunch of them: 700764625 825680068 Epsilon Dabih 984 I Moderate Snow Planet. There's a glitch village with both the codex stand and globe quest items and an apex lab with many syringes and other goodies. There's a tech chest with a blank tech card right in between the glitch village and the apex lab. P.S. Apparently I got a drum kit somewhere on this planet but didn't see where. I was using my MM to destroy chests and some crates in the village and didn't always pay much attention to what was inside. I did no spelunking, only surface chests and the occasional flashlight shine into a surface cave.