For those that are able to increase their cash reserves at home, please consider Cyprus as a canary in the coal mine. The government has decided to steal 6.75% - 10% of the people's money as a "bail-in" tax.
To remain below the radar, I highly recommend a slow and steady approach to save cash from your accounts. Do not take on any extra tax penalties or debt to increase your cash on hand.
If it isn't in your possession, then you really don't own it.
I recommend at least 2 months of cash on hand in various bill sizes to handle most emergency situations. In a SHTF scenario, cash can and will provide you an advantage over other people that are seeking the same goods.
Keep Right On Prepping - K