This may sound “too” simple; but throw a second phone charger (the normal, not car-charger kind) into your bag or car. You never know when you’re really gonna want one.
I was at the hospital all day yesterday waiting for my new niece to be born (pause for cheers). There were several of us with smart-phones and having nothing else to do, we spent the day playing games, posting updates, checking email and draining our batteries much faster than normal.
Thank goodness there were a few chargers in the group; when the good news came we could announce it to the world at full power.
Welcome to the world baby Slawson!