Ar 0:37:26 neither of Skylar's laptops have any markings on their covers. The "Miskatonic Oceanographic" sticker has completely disappeared.
The red and white flag on Jack's boat changes between flying free in the wind and being wrapped around its pole between shots from 1:06:20 and 1:06.32.
The "metal pipe" that Jimmy wields at 0:23:25 is obviously made of rubber.
At times both the metal Kris (dagger) and double-headed axe are obviously wooden painted props.
The textbook on the table next to Skylar's laptop during her first scene has the misspelled title "Standard Methosds" on the spine. Later 0:37:56 we can see that the correct title "Standard Methods" is printed on the cover.