Here is the full solution for CraftConnections Day 45. Each group is shown with its difficulty colour and a redundant shape, so it stays readable if you are colour blind.
Classic — Day 45
● Boots Golden Boots · Iron Boots · Leather Boots · Netherite Boots
▲ Shovels Netherite Shovel · Iron Shovel · Diamond Shovel · Golden Shovel
◆ Blocks that hold your stuff Hopper · Shulker Box · Blast Furnace · Furnace
★ Bees pollinate these Lilac · Peony · Open Eyeblossom · Azure Bluet
No-overlap — Day 45
● Ores you mine Deepslate Iron Ore · Gold Ore · Deepslate Coal Ore · Lapis Lazuli Ore
▲ Ways to get around Activator Rail · Lead · Oak Boat · Detector Rail