I think Tether is pretty risky itself.
Pax gold is more trustworthy(which you need if you don't want to hold your own).
You can get it at Kraken and others:
https://coinmarketcap.com/currencies/pax-gold/markets

If you can get psychical might be worth it just to get those but much harder to track i.e gold crypto you can just show address and boom proof....