Personally, if I'm in a coffee shop or any store with some people, I pull out my wallet and subtly show them my Xapo debit card.
If you'd be doing this here you will quickly lose a lot of friends.
Around here only gypsies are opening their wallets wide so anyone can see how many cards or notes they have in.
You're better of wearing bitcoin t-shirt.
There are some really cool ones for sale. (with btc of course).
Well, I don't need to open my wallet wide enough since the cards can be seen the moment I open my wallet.
Something like this:
They immediately notice the sort of red and black card on my wallet, since most common cards here are blue and gold. Also, I use my xapo card when in department stores or something. so thats also some extra publicity for bitcoin.
A bitcoin shirt would also be good though, but I wouldnt want to explain bitcoin like 90% of the time im outside.
Being a blogger, I wrote a series of articles about bitcoin in my native language in 2014 (and someone paid me 30 bucks to add their link in the article), However, since then I do share those links with everyone who ask me about bitcoin. Some of my friends are even asking me to help them to buy and hold bitcoins, However, I insist them to learn more about it before making any investment. Nowadays, I mostly focus on explaining bitcoin in one to one conversations. Further, I am also planning to add bitcoin niche on my visiting cards.
noice!
I wouldnt want to hold someone else's bitcoins though. If I somehow lose them then I would be at fault.