Small flasks of Everclear, cigarettes, etc. It's amazing how people will give you what you want if you can feed their vices.
Our thoughts exactly, and having many 'trade goods' already on hand is wise.
Oh, wait, are you asking about something legal, moral, and ethical? If so, I'd be interested in an answer, too.
LOL wont give 3shts about legal moral ethical if things are that sideways. It sounded like TheDan was speaking in the realm of financial instruments, etc, and to keep this simple - lets look at just the two kinds of 'gold'.
Gold-backed investments that are being hawked so hard now would not be immune to 'control'; even when converted/exchanged for FedCoin/FRD, because any expenditures/purchases would still be monitored/controlled.
Gold, physical gold, in your hand gold. Whatcha gonna do? Carry around scales and carve off a gram or two to trade for...?? You could, I suppose. But dont sit in someone's living room to do it - or their smart TV's monitoring camera will rat you out. And don't buy something you cant hide - or it's appearance in your possession could raise questions.