Clipboard and a collar are all you need to get anywhere and do almost anything. Just act like you belong there and are annoyed that people are in the way of your *activity
Go to any pharmacy or dollar store, go to the food section with a cart and a clipboard. Take random stuff off the shelf turn it around, scribble nonsense on the clipboard and then just leave with whatever. No one will ask what your doing, and if they do just say “I am the inspector mate” and you will be home before they even realized what happened. Not condoning, just saying.