I used to get so frustrated if I had forgotten to carry my phone and only showed a measly few thousand steps at the end of what I knew was a busy day. I've also been really surprised that I have done over 5,000 steps just moving about the house tidying up!
Which bike did you decide on in the end? I'm thinking about an electric bike for this summer and I've been looking at folding ones. It seemed sensible for the caravan, I could fold it up and put it away when I wasn't using it. They are a fair investment, though, about £1,500.