I went on a trip with totes too. People kept asking what I would do with all of them. That's like asking, "Why is 'up' up?" Everytime I'd think of a new use, or design, along came another tote?
You go girl! You don't need a reason to make them.
I think I need a casserole tote. Most dishes are round, so I think I'll make a round one. And bagettes are long and skinny and so are wine bottles. And this is all green 'cause I save grocery bags. And I can use up all those scraps.