Shoebox Savings & Thrift sounds like a better deal than SS. You won't make any interest or dividends, and it'll lose value from year to year, but:
1. It actually exists
2. It's actually yours
3. Some politician isn't going to throw it out the window/pocket it/give it away
Pauli will come steal it from under your bed
Don’t forget, you decide when you want to start using it.