The Stone Bowl for the Great Wall of China (1593 AD) is at the Lewis and Clark camp in 1805 AD (8 o'clock on the time device). When the beaver goes down into the tree, wait a few seconds then jump, and he will pop up as you get to him.
Return the bowl to the Great Wall of China (at the far left on the wall) -- climb the rope at the top and jump hard to the left to reach the sentry.
The pumpkin head is in Time Tangled Island and you have to find it.
Go to the Great Wall of China. Head right and you will see a barrel of gunpowder.
It's in Timbuktu. The dial on the time-traveling device with the dark-skinned woman's head wrapped in a pink cloth.
you dont need to return it all you do is go see the warrior who wacks you when you have the mask on and he will give you the gogles
The beaver in the tree (8 o'clock 1805 AD) has the Chinese stone bowl (6 o'clock, 1593 AD). Grab it when he sticks his head up.
on the side of their head
On the Aztec "time period" go to the right--you'll have to dodge some warriors--and climb up the last building, and you'll see an old man carrying a mask. Click on him, and he'll give you the mask!
When the beaver pops out and you jump after it, it will dive down. When it comes up jump after it, make dive down, land(of course), then jump to the top and the beaver pops up and you get the stone bowl.
Go to 1805 AD on your time machine. Next, jump to the top of the tree on which "Clark was here" has been written. When the beaver pops out of the top of the tree, click on the grey object on its head. If successful, you will receive the clay bowl.
The squirrel (probably actually a beaver) pops up out of the tree, but ducks when you try to grab him. Wait a few seconds after he goes down into the tree, then jump to catch him as he pops up again.
What you have to do is jump before the beaver goes back in the tree and grab the bowl. Hope I helped! =)
The items misplaced in time include :Salt Rocks - they are on the roof in 1776 AD and go to the man at 1387 AD (Mali Empire)Stone Bowl - it is on a squirrel's head atop a tree at 1805 AD and goes to the Great Wall of China (left side) at 1593 AD.