The Watcher's Eye is a plant that can be found in places such as caverns. Some can be found at Knotty Bramble.
The Blind Watcher's Eye is an oddity that can be found anywhere there are Watcher's Eyes to be harvested, it's just random chance.
The Dagger of Friendship is an oddity that can be found in various locations. It is enchanted with a spell to heal the person or creature it strikes. Appears in the Shivering Isles as a random loot.
( weigth = 12, Damage = 10, Spell restores 10hp per strike. )
The Deformed Swamp Tentacle is an oddity found on some rocks east of the Door to Cyrodiil and outside The Fringe, on the coast of the Emean Sea or a bit south-east from Corpserot Passage, almost directly by Lost Time Camp, also on some rocks. It is both the name of the plant and its ingredient.
Din's Ashes is an oddity valuable to Una Armina in Crucible. The ashes are a part of her Museum of Oddities quest and can be turned in for a finder's fee. You can find these ashes in the crematorium of Ebrocca after pushing a switch hidden under a leather shield in Ebrocca, Descenia. The ashes are in an urn on a shelf, next to a table with candles. There is also an amulet called the Slaughterfish Scale Charm inside the urn. An Ebrocca Descenia Key is on the Crematorium table.
The Hound's Tooth Key is a key found in random containers. The key does not give you access to any locked place. This item is also an oddity, which means it can be returned to Una Armina at the Museum of Oddities.
The Mixing Bowl is a piece of alchemy apparatus that has the same use and effects as a Novice Mortar and Pestle. The mixing bowl can be found in a few caves in the Shivering Isles. It looks just like a normal clay bowl, so be sure to check any clay bowls that you find in dungeons.
a Mute Screaming Maw can be found inside Corpserot Prison. It looks like the Watchers Eye Plant.
The Pelvis of Pelagius is the hip bone of the mad emperor, Pelagius Septim III. It can be found within The Howling Halls as an oddity.
The Ring of Disrobing is an enchanted ring that disrobes the wearer of any equipped piece of clothing or armor. The only thing that remains on the wearer is the ring. This item can be donated to the Museum of Oddities. This ring can be found in any random containers.
Sheogorath-Shaped Amber is amber that has Sheogorath's shape. It can be found randomly in amber stumps and limbs. This item is an oddity and can be donated to the Museum of Oddities.
The Soul Tomato is exactly what it sounds like it would be, a tomato that acts as a soul gem. The tomato is found randomly with pure luck anywhere in the Shivering Isles where you would randomly find a soul gem. The soul tomato is a part of the The Museum of Oddities quest.
The Two-Headed Septim is an oddity randomly found in containers. It can be donated to the Museum of Oddities for 150 gold.