The Golden Vase is at the bottom left in the cave. Use the gunpowder (from the Great Wall of China) to blast open the cave, then quickly reach the vase before the torch goes out.
You will have to move very quickly : go down, up, up, up, across to the right, then down, down, to the left and jump the three puddles of water. You can relight the torch at the bottom, but it is easier to just leave using the time device. Return the vase to the Treasury guards at 328 BC.
The special sunglasses from Spy Island were an item on Time Tangled Island, but are no longer there.
It means that the item is used automatically. For example, the gunpowder cannot be used anywhere but in 831 AD. Click the pile of rocks in front of the cave to explode it.
There is no paint brush as an item on Time Tangled Island. There is at least one in the scene at the workshop of Leonardo Da Vinci (1516 AD).
If you "beat" the island, then the glider (a reward for returning the notebook) is already in your item bag.
The special "spy chic" sunglasses were once a special item on Time Tangled Island as a promotion for Spy Island. They are no longer in the designated location there. All of the Headquarters agents on Spy Island are wearing them. (see related question)
The Mission Printout is selected as the first item in the Lab on Time Tangled Island. It does not provide any real information, only tells you that items are out of place in time and you have to go to the future to find out more.
The Sunglasses (like those on Spy Island) were a bonus item on Main Street on Time Tangled Island prior to the release of Spy Island. They are no longer there.
When you return an item on Time Tangled Island, the time device shows "green" for that time (there may still be objects to come from there). When all times are green, travel to the Lab (12 o'clock. the present). Use the Future Machine to travel to the restored future and get you Island Medallion.
The sunglasses, of the kind used on Spy island, were a bonus item found on the weathervane above Pendulum's Lab on Time Tangled Island. They are no longer there.
The gunpowder is to the bottom right side. If it isn't there, you may have already picked it up (look in your item bag). If you still can't find it, go to the Viking site (831 AD) and see what happens when you get in front of the rock cave. As a last resort, leave Time Tangled Island, re-boot Poptropica, and then come back. It may be a transient glitch in the program.
The "funny glasses" that were on Super Power island were a promotion, but they were moved to the Eyewear store on Spy island once that island was opened. Similarly, the spy sunglasses from Spy Island originally appeared as a special item on Time Tangled Island.
The item is the notebook of Leonardo Da Vinci and it is high on a ledge at the left side. Climb to the top of the statue and jump left to get it. Return it to Leonardo in 1516 AD.