Give mBTC to friends and family and show them how to use it and where to spend it. Be an evangelist. As big as BTC is these days, most people either haven't heard of it or think its a pyramid scheme - its our job to educate the people in our lives.
This is the most important thing to do in my opinion, I gave some to my brother and father a couple of months ago, they've been very happy that it has risen so fast.
I also regularly order pizza's for the family and paying for them with Bitcoin, I have some savings in a secure wallet and also some spending money in an active wallet.