If you live more than 5 miles from your flying field, it makes a lot of sense to have a tool/flight box with LOTS OF STUFF! That's better than running back home to get that special wrench or that extra prop that you didn't think you would need. How about TWO boxes? One with lots of support equipment, and a small one to carry out to the flight line.
I learned this the hard way, after making emergency trips back home during a flying session.