yes you can get thumb drive crypto wallets and so on. There's no magic to them, its just a memory stick packaged and promoted as if it's a special thing for crypto currencies. I figure you could make your own using a quality reliable memory stick/card and some encryption software.

Don't know of anyone I would trust to give my pm's to in return for cryptos. Too wild west for me.

Here's a promoted story on ZeroHedge from a couple months back. http://www.zerohedge.com/news/2017-0...-using-bitcoin

If I wanted cryptos I'd be tempted to go the long way round. Sell the pm's for regular folding and use the folding for buying crypto. Ignores the probability someone wants to shift $$ out of pm's and into something not reportable. I guess it comes down to risk aversion vs privacy.