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).
I will spread the knowledge about bitcoin in a good way. Then, I will tell to them what is bitcoin and how to use it.I guess I will use social media to create a blog that all about bitcoin. Also, I will help them how to get bitcoin and how to multiply it.I will share all my ideas about bitcoin to get them interested so that they also earn money or bitcoin.Lastly, I would help and support them to get the all knowledge that about bitcoin.