Why TrueBlue thinks the new TF2 items are related to TellTale's games:

POCKET LINT: Puzzle Agent has a "Bureau of Naval Lint" in the White House. The connection is backed up by the TF2 item's description - "Is it fabric lint? Navel lint you're keeping in your pocket so you don't lose it? Naval lint brushed from the hull of a battleship?"

CHEESE WHEEL: You shoot one during a Sam & Max Season 2 driving challenge. This is backed up by the TF2 item's description - "This cheese doesn't seem so mysterious until you realize it's full of bullet holes. Somebody got to this cheese before it could talk."

BARN DOOR PLANK: The Walking Dead is notorious for what goes on in its Barn scenes.

GOLDFISH: Almost definitely Mr. Spatula (from Sam & Max).

SECRET DIARY: Belongs to the Voodoo Lady from Tales Of Monkey Island; it appears in Episode 4.

DAMAGED CAPACITOR: Is it a 'flux' capacitor? Will we need to get Back to the Future at some point?

BANANA PEEL: Fished out of a garbage can in first episode of Sam & Max Season 3, as part of the "future sight" puzzle mechanic.