USDT is by far the best refuge. You can trade your BTC into USDT and buy back your bitcoin in greater value for cheap.
But besides that I would say potential "safe havens" are Litecoin or Monero. Maybe even Antshares.
Ah yeah true, but knowing my luck, if I went "all in" to USDT the Dollar would implode lol. I already have a few Litecoin and Antshares. Would be great to see XVG get a nice pump from people avoiding the madness though!