Having biked to school my entire life: Bikes have a luggage rack... You can easily fit one of those three items on there. I can't think of many situations wher

Having biked to school my entire life: Bikes have a luggage rack... You can easily fit one of those three items on there. I can't think of many situations where schedules collided to the point where I needed to take several bulky items home and back on the same day. And worst case, I'd just leave my sports kit at school overnight perhaps? Or get a lift on that one day. Or take the bus! I can't speak to large instruments though, that's a bigger (although fairly niche!?) problem.