Here is the full solution for CraftConnections Day 12. Each group is shown with its difficulty colour and a redundant shape, so it stays readable if you are colour blind.
Classic — Day 12
● You mine these with an axe Campfire · Crimson Stem · Cherry Log · Mangrove Log
▲ Crafted with diamonds Enchanting Table · Block of Diamond · Diamond Helmet · Diamond Chestplate
◆ The ender dragon cannot break these Bedrock · Respawn Anchor · Crying Obsidian · End Portal Frame
★ Piglins will not attack you for holding these Golden Chestplate · Golden Helmet · Gilded Blackstone · Raw Gold
No-overlap — Day 12
● Blocks that hold your stuff Barrel · Furnace · Dropper · Brewing Stand
▲ Only found in the Nether Crimson Stem · Nether Brick · Warped Stem · Magma Block
◆ Bundles Yellow Bundle · Orange Bundle · Brown Bundle · Red Bundle
★ Farmer villagers plant these Wheat Seeds · Beetroot Seeds · Pitcher Pod · Potato