What items are available, and where do you get them?

There are quite a few items available in Candy Box, and I still have three inventory slots left. What all items are there, and where are they all acquired?

Solution 1:

On completion, your inventory looks like this:

The items are, left-to-right, top-to-bottom:

• The key for the farm - Forest
• Armour - decreased damage - Castle Entrance
• Horn - faster lollipop production - Cow level, a random possibility when using a GMOOH potion
• Swamp Map - Mount Goblin
• Boots - faster movement - Mount Goblin
• Candy->Lollipop Machine - Castle Stairs
• Amulet - faster candy production - Castle Keep
• Sorceress Map - Forest
• Magicians Hat - Enchant things! - Underwater
• Cauldron - Make Potions - Castle Stairs
• Finishing Message - Final level
• Forge Map - Underwater
• Ring - Faster recovery - Underwater
• Unicorn Horn - Health Regen - Castle Keep
• Finishing Message - Final Level
• Well Map - Underwater

Solution 2:

Where to get (I think I have everything now):

• The key for the farm — Forest
• Armor — Castle entrance
• Horn — Cow level (G.M.O.O.H. (Get Me Out of Here) potion, finding the level can take many tries)
• Unicorn Horn — Castle Keep
• Amulet — Castle Keep
• Candy Converter — Castle Stairs
• Boots — Mount Goblin
• Swamp Map — Mount Goblin
• Sorceress Map — Forest
• Hat — Underwater
• Ring — Underwater
• Forge Map — Underwater
• Well Map — Underwater
• Cauldron — Castle Stairs