You deserve an ID card that says 'good friend.'
Be that as it may, you still need ID. This one requires you to search the boys' possessions.
Identity badges are pretty cool, so you should check out the place they're most likely to store cool stuff.
Remember the camera? We found it in the treehouse's box full of interesting things. Maybe there's some ID in or near the box?
Return to the boys' treehouse on Vinny's street, and search the fridge. Tony will reveal the ID.
With the ID in hand, return to these hints.