I was looking for a new "tackle Box" for my fly fishing stuff. A few days ago I had to wait for the school bus as the kiddies got off. They all had these backpacks which were unheard of in my day. I thought about it, went down to a store & got one for 10 bucks, loaded a set of clothes in it, my fly vest, other stuff and still have room for a lot more. I bet that might be a inexpensive answer to your question.

Tim