Moriko is the bassist for the band "Haguchi", whose music I really love, and I'm a bassist, too.
I'm surprised to see that Moriko apparently doesn't bring any instruments in her kei van camper, but for me, I would need to be able to fit at least a guitar and bass guitar, pedalboard, and field recorder, and a pair of small powered PA speakers.
Of course, at 185 cm tall, I probably wouldn't fit in a kei van, anyway.