Here is the full solution for CraftConnections Day 8. Each group is shown with its difficulty colour and a redundant shape, so it stays readable if you are colour blind.
Classic — Day 8
● Shovels Wooden Shovel · Golden Shovel · Copper Shovel · Iron Shovel
▲ These give off light Weathered Copper Lantern · Jack o'Lantern · Exposed Copper Lantern · End Rod
◆ Only found in the Nether Gilded Blackstone · Ancient Debris · Nether Quartz Ore · Ghast Tear